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! Copyright (c) 2021 Approximatrix, LLC <support@approximatrix.com>
!
! Permission is hereby granted, free of charge, to any person obtaining a copy
! of this software and associated documentation files (the "Software"), to deal
! in the Software without restriction, including without limitation the rights
! to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
! copies of the Software, and to permit persons to whom the Software is
! furnished to do so, subject to the following conditions:
!
! The above copyright notice and this permission notice shall be included in
! all copies or substantial portions of the Software.
!
! The Software shall be used for Good, not Evil.
!
! THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
! IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
! FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
! AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
! LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
! OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
! SOFTWARE.

module web
implicit none

    private
    
    public :: handle_request

    integer, parameter::REQUEST_UNKNOWN = 0
    integer, parameter::REQUEST_GET  = 1
    integer, parameter::REQUEST_POST = 2

contains

    function method()
    use utilities, only: toupper
    implicit none
    
        integer::method
        character(4)::method_text
    
        call get_environment_variable("REQUEST_METHOD", method_text)
        call toupper(method_text)
        if(trim(method_text) == "GET") then
            method = REQUEST_GET
        else if(method_text == "POST") then
            method = REQUEST_POST
        else
            method = REQUEST_UNKNOWN
        end if
        
    end function method

    subroutine echo_error_stdout(error_code)
    implicit none
    
        integer, intent(in)::error_code
    
        Print *, "<html><head><title>Falling...</title></head><body><p>An Error Occurred:"
        Print *, error_code
        Print *, "</p></body></html>"
        
    end subroutine echo_error_stdout
    
    subroutine handle_basic_template_components(req, page)
    use server_response
    use page_template
    use captain_db
    use config
    implicit none
    
        class(request), intent(in)::req
        type(template), intent(inout)::page
        character(len=128)::username
    
        call page%assign('project', project)
        call page%assign('base_url', req%server)
        
        if(req%is_authenticated_user()) then
        
            call page%assign('user_link_page', "profile")
            call get_session_username_db(req%token, username)
            call page%assign('user_link_text', achar(240)//achar(159)//achar(152)//achar(128)//" "//trim(username))
        
        else
        
            call page%assign('user_link_page', "login")
            call page%assign('user_link_text', "Login")
        
        end if
    
    end subroutine handle_basic_template_components
    
    subroutine build_request_object(req)
    use server_response, only:http_request
    use logging
    implicit none
    
        type(http_request), intent(out)::req
        character(len=:), allocatable::url, script_name, cookie, server_name, fullurl
        character(len=4)::method
        integer::url_size, cookie_size, sn_size
        
        call get_environment_variable("REQUEST_URI", length=url_size)
        allocate(character(len=url_size)::url)
        call get_environment_variable("REQUEST_URI", url)
        
        call get_environment_variable("SCRIPT_NAME", length=sn_size)
        allocate(character(len=sn_size)::script_name)
        call get_environment_variable("SCRIPT_NAME", script_name)
        
        call get_environment_variable("SERVER_NAME", length=sn_size)
        allocate(character(len=sn_size)::server_name)
        call get_environment_variable("SERVER_NAME", server_name)
        
        call get_environment_variable("REQUEST_METHOD", method)
        
        call get_environment_variable("HTTP_COOKIE", length=cookie_size)
        if(cookie_size > 0) then
            allocate(character(len=cookie_size) :: cookie)
            call get_environment_variable("HTTP_COOKIE", cookie)
            call write_log("COOKIE="//cookie, LOG_DEBUG)
        end if

        ! If we're in CGI mode, treat the "server" as the script name
        call write_log("URL IS "//trim(url), level=LOG_DEBUG)
        call write_log("SE IS "//trim(script_name), level=LOG_DEBUG)
        
        ! We don't actually use this fabircated URL, but it is helpful for debugging
        ! whatever the hell is going on when the request object is built...
        allocate(character(len=(len_trim(server_name) + len_trim(url) + 7)) :: fullurl)
        fullurl = "http://"//trim(server_name)//trim(url)
        call write_log("FULL URL WOULD BE "//trim(fullurl), level=LOG_DEBUG)
        
        if(allocated(cookie)) then
            call req%init(url, server_explicit=script_name, protocol_explicit="http", method=method, cookiestring=cookie)
            deallocate(cookie)
        else
            call req%init(url, server_explicit=script_name, protocol_explicit="http", method=method)
        end if
        
        deallocate(url)
        deallocate(script_name)
        deallocate(server_name)
        
    end subroutine build_request_object
    
    function html_link(link, label) result(res)
    use request_utils, only: build_link
    implicit none
        
        character(*), intent(in)::link, label
        character(len=:), pointer::res
        
        res => build_link(link, label, .false.)
    
    end function html_link

    function generate_one_instuction_html(req) result(res)
    use captain_db
    use server_response
    use request_utils, only: get_player_status_utf8, render_jobs_links, generate_simple_pager
    use config, only: global_permissions
    implicit none
    
        type(request)::req
        character(len=:), pointer::res
        integer::id_from_req
        
        character(128)::instruction_name
        type(job), dimension(:), pointer::jobs
        integer, dimension(:), pointer::players
        character(len=PLAYER_NAME_LENGTH), dimension(:), pointer::all_players
        integer::i, j, n_jobs, n_players, nsize, job_start_index
        
        character(len=:), pointer::job_link_text, one_link, pager
        character(1)::nl = new_line(' ')    
        character(PLAYER_NAME_LENGTH)::player_name
        character(4)::player_status
        
        i = index(req%page, ".html")
        instruction_name = req%page(1:i-1)
        id_from_req = get_instruction_id(trim(instruction_name))
        
        jobs => get_jobs_for_instruction(id_from_req)
        
        if(associated(jobs)) then
        
            if(associated(req%query_string)) then
                read(req%query_string, *, iostat=j) job_start_index
                if(j /= 0) then
                    job_start_index = 1
                end if
            else
                job_start_index = 1
            end if
    
            n_jobs = size(jobs)
            job_link_text => render_jobs_links(jobs, gemini_mode=.false., &
                link_prefix="../", startindex=job_start_index, &
                stopindex=min(job_start_index+4, n_jobs))
                
        else
            
            job_start_index = 0
            n_jobs = 0
            job_link_text => null()
            
        end if

        players => get_instruction_players(id_from_req)
        if(associated(players)) then
            n_players = size(players)
        else
            n_players = 0
        end if

        nsize = 1024
        if(n_jobs > 0) then
            nsize = nsize + len_trim(job_link_text)
        end if
        if(n_players > 0) then
            nsize = nsize + n_players*(2*PLAYER_NAME_LENGTH+64)
        end if

        nsize = nsize + get_player_count()*(2*PLAYER_NAME_LENGTH+64)

        allocate(character(len=nsize) :: res)

        res = "<h2>"//trim(instruction_name)//"</h2>"
        
        if(req%auth_level >= global_permissions%get("view-raw-instructions")) then
            one_link => html_link(trim(instruction_name)//".json", &
                                 "View Raw")
            res = trim(res)//nl//"<p><em>"//one_link//"</em></p>"
            deallocate(one_link)
        end if
        
        if(n_players == 0) then
            res = trim(res)//nl//"<p>No players currently can run these instructions</p>"
            
        else if(req%auth_level >= global_permissions%get("launch-job")) then
            res = trim(res)//nl//"<h3>Launch Now</h3>"//nl//"<ul>"
            
            do i = 1, n_players
                call get_player_name(players(i), player_name)
                player_status = get_player_status_utf8(players(i))
                one_link => html_link(req%page//"?launch="//trim(player_name), &
                                     trim(player_status)//" "//trim(player_name))
                
                res = trim(res)//nl//"<li>"//trim(one_link)//"</li>"
                
            end do
            
            res = trim(res)//nl//"</ul>"
        end if
        
        res = trim(res)//nl//"<h3>Jobs</h3>"
        if(n_jobs == 0) then
            res = trim(res)//nl//"None Yet"
        else
        
            pager => generate_simple_pager(job_start_index, job_start_index + 4, 5, n_jobs, req%page,.false.)
            
            res = trim(res)//nl//job_link_text
            
            if(associated(pager)) then
                res = trim(res)//nl//pager
                deallocate(pager)
            end if
            
            deallocate(job_link_text)
            
        end if
        
        if(req%auth_level >= global_permissions%get("assign-instructions")) then
            all_players => get_player_names()
            if(associated(all_players)) then
                res = trim(res)//nl//"<h3>Assign</h3>"//nl//"<p>Assign a player to these instructions</p>"//nl//"<ul>"
                do i = 1, size(all_players)
                    if(n_players > 0) then
                        j = get_player_id(all_players(i))
                        if(any(j == players)) then
                            cycle
                        end if
                    end if
                    
                    one_link => html_link(req%page//"?assign="//trim(all_players(i)), &
                                          trim(all_players(i)))
                    
                    res = trim(res)//nl//"<li>"//one_link//"</li>"
                    deallocate(one_link)
                end do
                res = trim(res)//nl//"</ul>"
                deallocate(all_players)
            end if
            
            if(n_players > 0) then
                 res = trim(res)//nl//"<h3>Remove</h3>"//nl//"<p>Remove a player from these instructions</p>"//nl//"<ul>"
                 do i = 1, n_players
                    call get_player_name(players(i), player_name)
                    
                    one_link => html_link(req%page//"?remove="//trim(player_name), &
                                          trim(player_name))
                                          
                    res = trim(res)//nl//"<li>"//one_link//"</li>"
                    deallocate(one_link)
                end do
                res = trim(res)//nl//"</ul>"
            end if
        end if
        
    end function generate_one_instuction_html

    function generate_instructions_html(req) result(res)
    use captain_db
    use server_response, only:request
    use config, only: global_permissions
    implicit none
    
        type(request)::req
        character(len=:), pointer::res
        character(len=PLAYER_NAME_LENGTH), dimension(:), pointer::instruction_names
        integer::n, i, nsize

        character(len=:), pointer::one_player, scanlink
        
        n = get_instructions_count()
        
        if(n == 0) then
        
            allocate(character(len=1024) :: res)
            res = "None Yet"
            
        else
        
            instruction_names => get_instruction_names()
            nsize = 1024
            do i = 1, size(instruction_names)
                nsize = nsize + 16 + 2*len_trim(instruction_names(i))
            end do
            
            allocate(character(len=nsize) :: res)
            res = "<h2>Instructions</h2>"//new_line(' ')//"<ul>"
            
            do i = 1, n
                one_player => html_link("instructions/"//trim(instruction_names(i))//".html", &
                                        trim(instruction_names(i)))
                res = trim(res)//new_line(' ')//"<li>"//trim(one_player)//"</li>"
                deallocate(one_player)
            end do
            
            res = trim(res)//new_line(' ')//"</ul>"
            
            deallocate(instruction_names)
        
        end if
        
        if(req%auth_level >= global_permissions%get("scan-instructions")) then
            res = trim(res)//new_line(' ')//"<h2>Management</h2>"
            
            scanlink => html_link(req%page//"?scan", "Scan for instructions now")
            res = trim(res)//new_line(' ')//"<p>"//scanlink//"</p>"
            deallocate(scanlink)
        end if
    
    end function generate_instructions_html
    
    function generate_groups_html(req) result(res)
    use captain_db
    use server_response, only:request
    use config, only: global_permissions
    implicit none
    
        type(request)::req
        character(len=:), pointer::res
        integer, dimension(:), pointer::groups
        character(128)::one_group
        integer::n, i

        character(len=:), pointer::one_link
        
        n = get_group_count_db()

        if(n == 0) then
        
            allocate(character(len=1024) :: res)
            res = "None Yet"
            
        else
        
            allocate(character(len=(n*(256+64) + 384)) :: res)
        
            res = "<h2>Groups</h2>"//new_line(' ')//"<ul>"
        
            groups => get_groups_db()
            do i=1, n
                call get_group_name_db(groups(i), one_group)
                one_link => html_link("groups/"//trim(one_group)//".html", &
                                      trim(one_group))
                
                res = trim(res)//new_line(' ')//"<li>"//trim(one_link)//"</li>"
                deallocate(one_link)
            end do
            
            res = trim(res)//new_line(' ')//"</ul>"
            deallocate(groups)
        
        end if
        
        if(req%auth_level >= global_permissions%get("add-groups")) then
            res = trim(res)//new_line(' ')//"<h2>Management</h2>"
            
            res = trim(res)//new_line(' ')// &
            '<form action="groups/add.html" method="POST"><label for="name">Name:</label>'// &
            '<input name="name" id="name" /><input type="submit" value="Add"/></form>'
        end if
    
    end function generate_groups_html
    
    function generate_one_group_html(req) result(res)
    use captain_db
    use server_response, only:request
    use request_utils
    use query_utilities
    use logging
    use remote_launch, only: launch_group
    use config, only: global_permissions
    implicit none
    
        type(request)::req
        character(len=:), pointer::res
        
        type(query)::q
        
        character(128)::group_name, instruction_name, player_name
        integer::id
        
        type(group_entry), dimension(:), pointer::entries
        type(work_pair), dimension(:), pointer::all_entries
        character(len=:), pointer::one_link, delete_link, play_link, qreq
        
        character(128)::launch_msg
        
        integer::i, j, n_instructions_group, n_instructions_total
        
        call req%path_component(2, group_name)
        i = index(group_name, ".html")
        group_name(i:128) = ' '
        
        id = get_group_id_db(trim(group_name))
        entries => null()
        all_entries => null()
        
        launch_msg = " "
        
        if(associated(req%query_string)) then
            
            call q%init(req%query_string)
            qreq => q%get_value("add")
            
            if(associated(qreq) .and. req%auth_level >= global_permissions%get("add-groups")) then
                
                call write_log("ADD: "//trim(qreq))
                
                i = index(qreq, ',')
                player_name = qreq(i+1:len_trim(qreq))
                instruction_name = qreq(1:i-1)
                
                i = get_instruction_id(trim(instruction_name))
                j = get_player_id(trim(player_name))
                
                call add_entry_to_group_db(id, i, j)

            else
            
                qreq => q%get_value("delete")
            
                if(associated(qreq) .and. req%auth_level >= global_permissions%get("modify-groups")) then
            
                    i = index(qreq, ',')
                    player_name = qreq(i+1:len(qreq))
                    instruction_name = qreq(1:i-1)
                    
                    i = get_instruction_id(trim(instruction_name))
                    j = get_player_id(trim(player_name))
                    
                    call remove_entry_from_group_db(id, i, j)

                else if(trim(req%query_string) == "launch" .and. req%auth_level >= global_permissions%get("launch-job")) then
                
                    call launch_group(id)
                    write(launch_msg, '(I4, 1X, A13)') get_group_entries_count_db(id), "jobs launched"
                    
                else if(trim(req%query_string) == "destroy" .and. req%auth_level >= global_permissions%get("modify-groups")) then
                
                    call delete_group_db(id)
                    
                end if
                
            end if
            
            call q%destroy()
            
        end if
        
        n_instructions_group = get_group_entries_count_db(id)
        n_instructions_total = get_available_count_db()
        
        allocate(character( len=(n_instructions_total*384 + 512) ) :: res)
        
        res = "<h2>"//trim(group_name)//"</h2>"
        
        if(n_instructions_group == 0) then
            
            res = trim(res)//new_line(' ')//"<p><em>Contains no instructions.</em></p>"
            
        else
        
            if(len_trim(launch_msg) > 0) then
                res = trim(res)//new_line(' ')//'<p><strong>'//trim(launch_msg)//'</strong></p>'
            else
                res = trim(res)//new_line(' ')//'<p><a href="'//req%page//'?launch">&#x1f680; Launch Now</a></p>'
            end if
            
            res = trim(res)//new_line(' ')//"<h3>Work to Be Performed</h3>"//new_line(' ')//"<ul>"
            
            entries => get_group_entries_db(id)
            do i = 1, n_instructions_group
            
                call get_instruction_name(entries(i)%instruction, instruction_name)
                call get_player_name(entries(i)%player, player_name)
            
                one_link => html_link("../instructions/"//trim(instruction_name)//".html", trim(instruction_name))
                play_link => html_link("../players/"//trim(player_name)//".html", trim(player_name))
                
                
                res = trim(res)//new_line(' ')//"<li>"//one_link//" on "//play_link
                
                if(req%auth_level >= global_permissions%get("modify-groups")) then
                    delete_link => html_link(trim(group_name)//".html?delete="// &
                                             trim(instruction_name)//","//trim(player_name), &
                                             "<em>Remove</em>")
                    res = trim(res)//" - "//delete_link
                    deallocate(delete_link)
                end if
                
                res = trim(res)//"</li>"
            
                deallocate(one_link)
                deallocate(play_link)
            
            end do
            
            res = trim(res)//new_line(' ')//"</ul>"
            
        end if
        
        if(n_instructions_total > 0 .and. req%auth_level >= global_permissions%get("modify-groups")) then
        
            res = trim(res)//new_line(' ')//"<h3>Add Instructions</h3>"
            
            all_entries => get_available_work_pairs_db()
            if(associated(all_entries)) then
            
                res = trim(res)//new_line(' ')//'<form action="'//trim(group_name)//'.html" method="GET">'// &
                    '<label for="add">Instruction:</label>'//new_line(' ')// &
                    '<select name="add" id="add">'
                
                do i=1,n_instructions_total
                
                    if(associated(entries)) then
                        if(any(entries%player == all_entries(i)%player .AND. &
                               entries%instruction == all_entries(i)%instruction) )  &
                        then
                            cycle
                        end if
                    end if
        
                    call get_instruction_name(all_entries(i)%instruction, instruction_name)
                    call get_player_name(all_entries(i)%player, player_name)
                    res = trim(res)//new_line(' ')//'<option value="'//trim(instruction_name)//","//trim(player_name)//'">'// &
                          trim(instruction_name)//" on "//trim(player_name)//"</option>"
                        
                end do
                
                res = trim(res)//new_line(' ')//'</select>'//'<input type="submit" value="Add"/></form>'
            end if
        end if
        
        if(req%auth_level >= global_permissions%get("modify-groups")) then
            res = trim(res)//new_line(' ')//'<h3>Destroy This Group</h3>'//new_line(' ')// &
                  '<p><a href="'//req%page//'?destroy">&#x1f4a3; Destroy</a></p>'//new_line(' ')// &
                  '<p><em>This operation will not destroy any instructions</em></p>'
        end if
        
    end function generate_one_group_html

    function generate_players_html(req) result(res)
    use captain_db
    use request_utils, only: get_status_utf8
    use server_response, only: request
    use config, only: global_permissions
    implicit none
        
        type(request), intent(in)::req
    
        character(len=:), pointer::res
        character(len=PLAYER_NAME_LENGTH), dimension(:), pointer::players
        integer::n, i, nsize, pid

        character(4)::player_status
        character(len=:), pointer::one_player
        
        n = get_player_count()
        if(n == 0) then
        
            allocate(character(len=1024) :: res)
            
            res = "None Yet"
            
        else

            players => get_player_names()
            
            nsize = 1024
            do i = 1, size(players)
                nsize = nsize + 16 + 2*len_trim(players(i))
            end do
            
            allocate(character(len=nsize) :: res)
            res = "<h2>Existing Players</h2>"//new_line(' ')//"<ul>"
            
            do i = 1, n
            
                pid = get_player_id(players(i))
                if(is_player_online(pid)) then
                    if(is_player_busy(pid)) then
                        player_status = get_status_utf8(PLAYER_STATUS_BUSY)
                    else
                        player_status = get_status_utf8(PLAYER_STATUS_IDLE)
                    end if
                else
                    player_status = get_status_utf8(PLAYER_STATUS_OFFLINE)
                end if
            
                one_player => html_link("players/"//trim(players(i))//".html", &
                                       trim(player_status)//" "//trim(players(i)))
                res = trim(res)//new_line(' ')//"<li>"//trim(one_player)//"</li>"
                deallocate(one_player)
            end do
            
            res = trim(res)//new_line(' ')//"</ul>"
            deallocate(players)
        end if
        
        if(req%auth_level >= global_permissions%get("add-players")) then
            res = trim(res)//new_line(' ')//"<h2>Management</h2>"// &
            new_line(' ')//'<form action="players/add.html" method="POST"><label for="name">Name:</label>'// &
            '<input name="name" id="name" /><input type="submit" value="Add"/></form>'
        end if
        
    end function generate_players_html

    function generate_one_player_html(req) result(res)
    use captain_db
    use server_response
    use request_utils
    use config, only: global_permissions
    implicit none

        type(request), intent(in)::req
        character(len=:), pointer::res
        
        character(len=PLAYER_NAME_LENGTH)::player_name, instruction_name
        character(len=:), pointer::one_link
        integer::i, n, pid
        integer, dimension(8)::values
        integer, dimension(:), pointer::instruction_ids
        
        character(len=64)::dateconvert
        
        call req%last_component(player_name)
        i = index(player_name, '.html')
        player_name = player_name(1:i-1)
        pid = get_player_id(trim(player_name))
        
        n = get_instructions_count(player=pid)
        allocate(character(len=(2*n*PLAYER_NAME_LENGTH + 1024)) :: res)
        
        res = "<h2>"//trim(player_name)
        if(is_player_online(pid)) then
            res = trim(res)//" - Online</h2>"
        else
            res = trim(res)//" - Offline</h2>"
        end if
        
        ! Last checkin
        call get_last_checkin_time(pid, values)
        write(dateconvert, '(I4,A1,I0.2,A1,I0.2,3X,I2,A1,I0.2,A1,I0.2)') &
            values(1), '-', values(2), '-', values(3), &
            values(5), ':', values(6), ':', values(7)
        
        res = trim(res)//new_line(' ')//'<p><em>Last Checkin: <strong>'//trim(dateconvert)//&
              '</strong></em></p>'
        
        ! List of instructions
        res = trim(res)//new_line(' ')//"<h3>Instructions for "//trim(player_name)//"</h3>"
        instruction_ids => get_instruction_ids(player=pid)
        if(associated(instruction_ids)) then
            res = trim(res)//new_line(' ')//"<ul>"
            do i = 1, n
                call get_instruction_name(instruction_ids(i), instruction_name)
                one_link => html_link("../instructions/"//trim(instruction_name)//".html", trim(instruction_name))
                res = trim(res)//new_line(' ')//"    <li>"//one_link//"</li>"
                deallocate(one_link)
            end do
            res = trim(res)//new_line(' ')//"</ul>"
            deallocate(instruction_ids)
        else
            res = trim(res)//"<p>None Yet</p>"
        end if
        
        if(req%auth_level >= global_permissions%get("modify-players")) then
            ! Token assignment
            res = trim(res)//new_line(' ')//"<h3>Security</h3>"//new_line(' ')//"<p>"
            
            if(player_has_token_db(trim(player_name))) then
                res = trim(res)//"Player currently has a token assigned."
            else
                res = trim(res)//"<em>Player is insecure!  Please assign a token!</em>"
            end if
            
            res = trim(res)//"</p>"
            
            res = trim(res)//new_line(' ')// &
                  '<form action="assign_token.html" method="POST">'//new_line(' ')// &
                  '<label for="token">Token:</label>'// &
                  '<input name="token" id="token" />'//new_line(' ')// &
                  '<input type="hidden" name="player" id="player" value="'//trim(player_name)//'"/>'//new_line(' ')// &
                  '<input type="submit" value="Set"/></form>'
        end if
        
    end function generate_one_player_html

    function generate_one_job_html(req) result(res)
    use captain_db
    use config
    use server_response
    use special_filenames, only: get_task_result_static_filename
    use request_utils, only: get_status_utf8, get_player_link => player_link, &
                             get_instruction_link => instruction_link
    implicit none
    
        type(request), intent(in)::req
        character(len=:), pointer::res
        
        character(4)::status
        integer::i, j, job_id
        type(job)::one_job
        
        character(1)::nl = new_line(' ')
        
        type(task), dimension(:), pointer::tasks
        character(32)::task_text, job_text, task_type
        character(len=:), pointer::task_results_filename, one_link, local_task_results_filename
        character(len=:), pointer::player_link, instruction_link
        
        character(len=FILENAME_NAME_LENGTH), dimension(:), pointer::releases
        logical::file_exists
        
        res => null()
    
        ! Ugh, all this nonsense
        call req%last_component(job_text)
        j = index(job_text, ".", back=.true.)
        job_text(j:len(job_text)) = " "
        read(job_text, '(I8)') job_id
        one_job = get_job(job_id)
        
        if(one_job%id >= 0) then
            allocate(character(len=1024) :: res)
            
            status = get_status_utf8(one_job%status)
            res = "<h2>Status - "//status//"</h2>"
            
            player_link => get_player_link(one_job%player, .FALSE., prefix="..")
            if(associated(player_link)) then
                res = trim(res)//nl//nl//"<p><em>Running on "//player_link//nl// &
                      "Last update at: "//one_job%time//"</em></p>"
                deallocate(player_link)
            end if
            
            instruction_link => get_instruction_link(one_job%instruction, .FALSE., prefix="..")
            if(associated(instruction_link)) then
                res = trim(res)//nl//"<p><em>Executing: "//instruction_link//"</em></p>"
                deallocate(instruction_link)
            end if
            
            res = trim(res)//nl//nl//"<h3>Task Results</h3>"
            
            tasks => get_job_tasks(job_id)
            if(associated(tasks)) then
                res = trim(res)//nl//"<ul>"
                do i = 1, size(tasks)
                    status = get_status_utf8(tasks(i)%status)
                    task_results_filename => get_task_result_static_filename(one_job%id, i, no_path=.true.)
                    local_task_results_filename => get_task_result_static_filename(one_job%id, i, no_path=.false.)
                    inquire(file=local_task_results_filename, exist=file_exists)
                    
                    write(task_text, '(I8)') i
                    
                    if(file_exists) then
                        one_link => html_link("../results/"//task_results_filename, &
                                              trim(status)//" - Task "//trim(adjustl(task_text)))
                    
                        res = trim(res)//nl//"    <li>"//trim(one_link)
                        deallocate(one_link)
                    else
                        res = trim(res)//nl//"    <li>"// &
                              trim(status)//" - Task "//trim(adjustl(task_text))
                    end if
                    
                    if(get_task_type(job_id, i, task_type)) then
                        res = trim(res)//" ("//trim(task_type)//")"
                    end if
                    
                    res =  trim(res)//"</li>"
                    deallocate(local_task_results_filename)
                    deallocate(task_results_filename)
                end do
                res = trim(res)//nl//"</ul>"
                deallocate(tasks)
            else
                res = trim(res)//nl//nl//"<p><strong>None reported yet</strong></p>"
            end if
            
            if(get_job_upload_count_by_category_db(job_id, "releases") > 0 .and. &
               req%auth_level >= global_permissions%get("access-releases"))  &
            then
            
                res = trim(res)//nl//"<h3>Releases</h3>"//nl//"<ul>"
                releases => get_job_uploads_by_category_db(job_id, "releases")
                do i = 1, size(releases)
                    
                    one_link => html_link("../releases/"//trim(releases(i)), &
                                          trim(releases(i)))
                    
                    res = trim(res)//nl//"    <li>"//trim(one_link)//"</li>"
                
                end do
            
                res = trim(res)//nl//"</ul>"
            
            end if
            
        else
        
            allocate(character(len=64) :: res) 
            write(res, '(A20, 1X, I5)') "No record of:", job_id
            
        end if
    
    end function generate_one_job_html

    function generate_releases_html(req) result(res)
    use utilities
    use server_response
    use config
    implicit none
    
        type(request), intent(in)::req
        character(len=:), pointer::res
        character(len=DIR_LIST_STRING_LENGTH), dimension(:), pointer::directories
        character(len=DIR_LIST_STRING_LENGTH), dimension(:), pointer::files
        
        character(1024)::public_path, local_path, subpath
        integer::allocation_size, i
        character(1)::nl = new_line(' ')
        character(4)::folder_icon = char(240)//char(159)//char(147)//char(129)
        character(len=:), pointer::one_link
        
        if(.not. associated(req%query_string)) then
            public_path = "/releases"
            local_path = release_dir
        else if(len_trim(req%query_string) == 0) then
            public_path = "/releases"
            local_path = release_dir
        else
            call combine_paths("/releases", req%query_string, public_path)
            call combine_paths(release_dir, req%query_string, local_path)
        end if
        
        res => null()
        
        ! Auth check
        if(req%auth_level < global_permissions%get("access-releases")) then
            allocate(character(len=64)::res)
            if(req%auth_level == 0) then
                res = "Login required."
            else
                res = "Unacceptable permissions"
            end if
            return
        end if
        
        ! Easy safety check - no relative paths
        if(index(local_path, '..') > 0) then
            allocate(character(len=64)::res)
            res = "None Found"
            return
        end if
        
        directories => get_directories_in_directory(local_path)
        files => get_files_in_directory(local_path)
        
        allocation_size = 1024
        if(associated(directories)) then
            allocation_size = allocation_size + 2 * size(directories) * (DIR_LIST_STRING_LENGTH+32)
        end if
        if(associated(files)) then
            allocation_size = allocation_size + 2 * size(files) * (DIR_LIST_STRING_LENGTH+32)
        end if
        allocate(character(len=allocation_size) :: res)
        res = "<h2>Listing for "//trim(public_path)//"</h2>"//nl//"<ul>"
        
        ! Add an "Up" link
        if(trim(public_path) /= "/releases") then
            i = index(req%query_string, "/", back=.true.)
            if(i > 0) then
                one_link => html_link("releases.html?"//req%query_string(1:(i-1)), "Up a directory")
            else
                one_link => html_link("releases.html", "Up a directory")
            end if
            res = trim(res)//nl//"<li>"//one_link//"</li>"
            deallocate(one_link)
        end if
        
        if(associated(directories)) then
            
            do i = 1, size(directories)
            
                if(associated(req%query_string)) then
                    call combine_paths(req%query_string, trim(directories(i)), subpath)
                else
                    subpath = trim(directories(i))
                end if

                one_link => html_link("releases.html?"//trim(subpath), folder_icon//" "//trim(directories(i)))
                res = trim(res)//nl//"<li>"//one_link//"</li>"
                deallocate(one_link)
                
            end do
            
            deallocate(directories)
            
        end if
        
        if(associated(files)) then
        
            do i = 1, size(files)
                call combine_paths(public_path(2:len_trim(public_path)), trim(files(i)), subpath)
                one_link => html_link(trim(subpath), trim(files(i)))
                res = trim(res)//nl//"<li>"//one_link//"</li>"
                deallocate(one_link)
            end do
            
            deallocate(files)
            
        end if
            
        res = trim(res)//nl//"</ul>"
            
    end function generate_releases_html
    
    function generate_jobs_html(req) result(res)
    use captain_db
    use server_response
    use request_utils, only: render_jobs_links, generate_simple_pager
    use logging
    implicit none
    
        type(request)::req
        character(len=:), pointer::res
        type(job), dimension(:), pointer::jobs
        integer::n, nsize
        integer::i_start_jobs, ierr
        
        character(len=:), pointer::linklist, pager
        
        n = get_jobs_count()
        if(n == 0) then
        
            allocate(character(len=1024) :: res)
            
            res = "None Yet"
            
        else
            if(associated(req%query_string)) then
                read(req%query_string, *, iostat=ierr) i_start_jobs
            else
                ierr = -1
            end if
            
            if(ierr /= 0) then
                i_start_jobs = 1
            end if
        
            jobs => get_jobs()
        
            ! 15 per page
            nsize = 15*(2*PLAYER_NAME_LENGTH + 64) + 1024
            allocate(character(len=nsize) :: res)

            res = " "
            
            linklist => render_jobs_links(jobs, i_start_jobs, min(i_start_jobs+14, n), .false.)
            res = trim(res)//new_line(' ')//trim(linklist)
            
            ! Pagers
            pager => generate_simple_pager(i_start_jobs, min(i_start_jobs+14, n), 15, n, req%page, .false.)
            if(associated(pager)) then
                res = trim(res)//new_line(' ')//pager
                deallocate(pager)
            end if
            
            deallocate(linklist)
        
        end if
        
    end function generate_jobs_html

    function request_templated(req) result(resp)
    use page_template
    use config, only: template_filepath, project
    use logging
    use server_response, only:request, response
    use http_codes, only: HTTP_CODE_SUCCESS, HTTP_CODE_NOTFOUND
    use request_utils, only: get_job_page_title, handle_instruction_command
    use captain_db, only: scan_instructions_for_db, get_session_username_db, destroy_session_db
    use utilities, only: build_date
    implicit none
    
        class(request), intent(in)::req
        type(response)::resp
        
        character(64)::template_to_use
        character(1024)::template_file
        type(template)::page
        character(64)::first
        
        character(len=:), pointer::contents
        character(128)::job_page_title, username
        
        integer::i
        logical::authenticated
        
        authenticated = req%is_authenticated_user()
        
        if(trim(req%location) == "/" .or. &
           trim(req%location) == "/index.html" .or. &
           trim(req%location) == "/home.html") &
        then
        
            template_to_use = "home.html"
            
        else if(trim(req%location) == "/about.html") then
        
            template_to_use = "about.html"
        
        else if(trim(req%location) == "/login.html") then
        
            if(authenticated) then
                template_to_use = "redirect.html"
            else
                template_to_use = "login.html"
            end if
        
        else if(trim(req%location) == "/profile.html") then
        
            if(authenticated) then
                template_to_use = "profile.html"
            else
                template_to_use = "redirect.html"
            end if
        
        else if(trim(req%location) == "/logout.html") then
            
            template_to_use = "redirect.html"
            
        else
        
            template_to_use = "index.html"
            
        end if
        
        call template_filepath(template_to_use, template_file)
        call write_log("Template base path is: "//trim(template_file), LOG_DEBUG)
        call page%init(trim(template_file))
        
        ! Initialize with success
        resp%code = HTTP_CODE_SUCCESS
        
        call req%path_component(1, first)
        
        if(trim(req%location) == "/" .or. trim(req%location) == "/index.html" .or. trim(req%location) == "/home.html") then
        
            call page%assign('title', 'Home')
            
        else if(trim(req%location) == "/releases.html") then
        
            call page%assign('title', 'Releases')
            contents => generate_releases_html(req)
            call page%assign('contents', contents)
        
        else if(trim(req%location) == "/jobs.html") then
        
            call page%assign('title', 'Jobs')
            contents => generate_jobs_html(req)
            call page%assign('contents', contents)
        
        else if(trim(req%location) == "/players.html") then
        
            call page%assign('title', 'Players')
            contents => generate_players_html(req)
            call page%assign('contents', contents)
            
        else if(req%location(1:9) == '/players/') then
            
            call req%last_component(job_page_title)
            i = index(job_page_title, '.', back=.true.)
            
            call page%assign('title', job_page_title(1:i-1))
            contents => generate_one_player_html(req)
            call page%assign('contents', contents)
        
        else if(trim(req%location) == "/about.html") then
        
            call page%assign('title', 'About')
            call page%assign('build_date', build_date())
            
        else if(trim(req%location) == "/instructions.html") then
            
            if(associated(req%query_string) ) then
                if(trim(req%query_string) == "scan") then
                    call scan_instructions_for_db()
                end if
            end if
            
            call page%assign('title', 'Build Instructions')
            contents => generate_instructions_html(req)
            call page%assign('contents', contents)
            
        else if(trim(first) == "instructions") then
            
            if(associated(req%query_string)) then
                call handle_instruction_command(req)
            end if
            
            call page%assign('title', 'Build Instructions')
            contents => generate_one_instuction_html(req)
            call page%assign('contents', contents)
        
        else if(trim(first) == "jobs") then
            
            call get_job_page_title(req, job_page_title)
            call page%assign('title', trim(job_page_title))
            contents => generate_one_job_html(req)
            call page%assign('contents', contents)
        
        else if(trim(req%location) == "/groups.html") then
        
            call page%assign('title', 'Instruction Groups')
            contents => generate_groups_html(req)
            call page%assign('contents', contents)
        
        else if(trim(first) == "groups") then
        
            call page%assign('title', 'Instruction Group')
            contents => generate_one_group_html(req)
            call page%assign('contents', contents)
        
        else if(trim(first) == "login.html") then
        
            call page%assign('title', 'Login')
            if(authenticated) then
                call page%assign('destination', 'home.html')
            else 
                if(associated(req%q%get_value("failed"))) then
                    call page%assign('login_message', "Login Failed.")
                end if
            end if
        
        else if(trim(first) == "profile.html") then
        
            call page%assign('title', 'User Profile')
            if(authenticated) then
                call get_session_username_db(req%token, username)
                call page%assign('username', username)
            else
                call page%assign('destination', 'login.html')
            end if
            
        else if(trim(first) == "logout.html") then
            
            call page%assign('title', 'Logout')
            call page%assign('destination', 'home.html')
            if(authenticated) then
                call destroy_session_db(req%token)
            end if
        
        else
        
            call page%assign('title', 'Not Found')
            resp%code = HTTP_CODE_NOTFOUND
            
        end if
        
        call handle_basic_template_components(req, page)
        
        call write_log("Rendering page for "//req%location)
        call page%render()

        call write_log("Finalizing response", LOG_INFO)
        resp%temporary_file = .true.
        resp%body_filename => page%output_filename
        resp%body_mimetype = "text/html"
        
    end function request_templated
    
    function handle_post(req) result(resp)
    use captain_db, only: add_player_db, add_group_db, update_player_token_db, create_user_session_db, &
                          validate_user_db
    use page_template
    use config, only: template_filepath, global_permissions
    use logging
    use server_response, only:http_request, response
    use http_post_utilities
    use query_utilities, only: query
    use http_codes
    implicit none
    
        type(http_request), intent(in)::req
        type(response)::resp
        type(query)::posted
        
        character(1024)::template_file
        type(template)::page
        
        character(64)::category, second
    
        posted = read_post_contents()
        call write_log("Post Contents: "//posted%full, LOG_DEBUG)
        
        if(posted%component_count() > 0) then
        
            ! We will immediately redirect after the command is handled
            call template_filepath("redirect.html", template_file)
            call page%init(trim(template_file))
            
            ! Handle based on category
            call req%path_component(1, category)
            if(trim(category) == "players") then
                call req%path_component(2, second)
                
                ! Add a player
                if(trim(second) == "add.html" .and. req%auth_level >= global_permissions%get("add-players")) then
                
                    call add_player_db(posted%get_value("name"))
                    call page%assign('destination', 'players.html')
    
                else if(trim(second) == "assign_token.html" .and. req%auth_level >= global_permissions%get("modify-players")) then
                
                    call update_player_token_db(posted%get_value("player"), posted%get_value("token"))
                    call page%assign('destination', "players/"//posted%get_value("player")//".html")
    
                end if
            
            else if(trim(category) == "groups") then
            
                call req%path_component(2, second)
                
                ! Add a group
                if(trim(second) == "add.html" .and. req%auth_level >= global_permissions%get("add-groups")) then
                
                    call add_group_db(posted%get_value("name"))
                    call page%assign('destination', 'groups.html')
    
                end if
                
            else if(trim(category) == "login.html") then
            
                ! Determine if logged in
                if(validate_user_db(posted%get_value("username"), posted%get_value("password"))) then
                    call resp%set_cookie("token", create_user_session_db(posted%get_value("username")))
                    call page%assign('destination', "home.html")
                else
                    call page%assign('destination', "login.html?failed=1")
                end if
            
            end if
            
            ! Handle the template
            call handle_basic_template_components(req, page)
            call page%render()

            call write_log("Finalizing response", LOG_INFO)
            resp%temporary_file = .true.
            resp%body_filename => page%output_filename
            resp%body_mimetype = "text/html"
            resp%code = HTTP_CODE_SUCCESS
            
            call posted%destroy()
            
        else
        
            resp%code = HTTP_CODE_FAILURE
        
        end if

    end function handle_post

    subroutine handle_request()
    use server_response, only:http_request, response
    use logging
    use request_utils
    use http_codes
    use http, only: write_response_headers, write_redirect
    use iso_fortran_env, only: output_unit
    use utilities, only: echo_file_stdout
    implicit none
    
        type(http_request)::req
        type(response)::resp
        integer::response_size
        
        character(64)::logresponse
        
        call build_request_object(req)
        
        if(is_request_static(req)) then
            call write_log("Req static", LOG_INFO)
            resp = request_static(req)
    
        else if(req%is_post()) then
            call write_log("POST operation", LOG_INFO)
            resp = handle_post(req)
    
        else 
            call write_log("Req template", LOG_INFO)
            resp = request_templated(req)
    
        end if
        
        ! Perform the response
        call write_log("Publishing response", LOG_INFO)
        
        write(logresponse, *) "Response code is: ", resp%code
        call write_log(trim(logresponse), LOG_INFO)
        
        select case(resp%code)
            case(HTTP_CODE_REDIRECT)
                call write_redirect(output_unit, resp%code, trim(resp%url))
                
            case(HTTP_CODE_SUCCESS)
                inquire(file=resp%body_filename, size=response_size)
                if(associated(resp%cookiecmd)) then
                    call write_response_headers(output_unit, resp%code, response_size, trim(resp%body_mimetype), resp%cookiecmd)
                else
                    call write_response_headers(output_unit, resp%code, response_size, trim(resp%body_mimetype))
                end if
                call echo_file_stdout(resp%body_filename)
                
            case default
                call write_log("Failure reported for location: "//trim(req%location), LOG_NORMAL)
                call echo_error_stdout(resp%code)
            ! Need some more...
            
        end select
        
        call write_log("Cleanup", LOG_INFO)
        
        call resp%destroy()
        call req%destroy()
    
        call write_log("Exit handler", LOG_INFO)
    
    end subroutine handle_request

end module web