<?php

namespace App\Http\Controllers;

use App\Actions\Git\BuildSuggestedTicketBranchName;
use App\Actions\Git\ResolveTicketBranchMatches;
use App\Actions\Git\ResolveTicketPullRequestMatches;
use App\Actions\Permissions\PermissionService;
use App\Actions\Tickets\CreateProjectTicket;
use App\Actions\Tickets\UpdateProjectTicket;
use App\Enums\Permission;
use App\Http\Requests\StoreProjectTicketRequest;
use App\Http\Requests\UpdateProjectTicketRequest;
use App\Http\Resources\ProjectResource;
use App\Http\Resources\TicketFieldDefinitionResource;
use App\Http\Resources\TicketLinkResource;
use App\Http\Resources\TicketLinkTypeResource;
use App\Http\Resources\TicketPriorityResource;
use App\Http\Resources\TicketReferenceResource;
use App\Http\Resources\TicketRepositoryBranchResource;
use App\Http\Resources\TicketRepositoryPullRequestResource;
use App\Http\Resources\TicketResource;
use App\Http\Resources\TicketStatusResource;
use App\Http\Resources\TicketTreeNodeResource;
use App\Http\Resources\TicketTypeResource;
use App\Http\Resources\UserResource;
use App\Models\Project;
use App\Models\Ticket;
use App\Models\TicketLink;
use App\Models\User;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Arr;
use Inertia\Inertia;
use Inertia\Response;

class ProjectTicketController extends Controller
{
    public function __construct(
        private readonly BuildSuggestedTicketBranchName $buildSuggestedTicketBranchName,
        private readonly CreateProjectTicket $createProjectTicket,
        private readonly PermissionService $permissionService,
        private readonly ResolveTicketBranchMatches $resolveTicketBranchMatches,
        private readonly ResolveTicketPullRequestMatches $resolveTicketPullRequestMatches,
        private readonly UpdateProjectTicket $updateProjectTicket,
    ) {}

    public function create(Request $request, Project $project): Response
    {
        $user = $request->user();

        abort_unless(
            $this->permissionService->allows($user, Permission::ProjectWrite, $project),
            403,
        );

        $source = Arr::get($request->query(), 'source') === 'board'
            ? 'board'
            : 'backlog';
        $defaultTicketStatus = $source === 'board'
            ? $project->ticketStatuses()->whereNotNull('board_column_id')->first()
            : $project->ticketStatuses()->whereNull('board_column_id')->first();

        $defaultTicketStatus ??= $project->ticketStatuses()->first();

        return Inertia::render('projects/TicketCreate', [
            'defaultTicketStatusId' => $defaultTicketStatus?->id,
            'project' => ProjectResource::make($project)->resolve(),
            'source' => $source,
            'status' => session('status'),
            'ticketPriorities' => TicketPriorityResource::collection($project->ticketPriorities()->get())->resolve(),
            'ticketStatusOptions' => TicketStatusResource::collection(
                $project->ticketStatuses()
                    ->with('boardColumn')
                    ->get(),
            )->resolve(),
            'ticketTypes' => TicketTypeResource::collection($project->ticketTypes()->get())->resolve(),
            'users' => UserResource::collection(
                User::query()
                    ->orderBy('name')
                    ->get(),
            )->resolve(),
        ]);
    }

    public function store(StoreProjectTicketRequest $request, Project $project): RedirectResponse
    {
        $user = $request->user();

        abort_unless(
            $this->permissionService->allows($user, Permission::ProjectWrite, $project),
            403,
        );

        $ticket = $this->createProjectTicket->handle(
            $project,
            $request->validated(),
            $user,
        );

        return to_route('projects.tickets.show', [$project, $ticket])
            ->with('status', "{$ticket->ticket_key} was created.");
    }

    public function show(Request $request, Project $project, Ticket $ticket): Response
    {
        $user = $request->user();

        abort_unless(
            $this->permissionService->allows($user, Permission::ProjectRead, $project),
            403,
        );

        $canEditTicket = $this->permissionService->allows($user, Permission::ProjectWrite, $project);
        $canManageProject = $this->permissionService->allows($user, Permission::ProjectAdmin, $project);
        $displayTicket = $ticket->load([
            'assignee',
            'author',
            'fieldValues.ticketFieldDefinition',
            'fieldValues.userValue',
            'parentTicket',
            'ticketPriority',
            'ticketStatus.boardColumn',
            'ticketType',
            'worklogEntries.actor',
        ]);

        if (! $project->show_author && ! $canManageProject) {
            $displayTicket->setRelation('author', null);
            $displayTicket->author_user_id = null;
        }

        return Inertia::render('projects/Ticket', [
            'canEditTicket' => $canEditTicket,
            'canManageProject' => $canManageProject,
            'childTicketTree' => TicketTreeNodeResource::collection(
                $ticket->childTickets()
                    ->with('ticketType')
                    ->get(),
            )->resolve(),
            'linkedTickets' => TicketLinkResource::collection(
                TicketLink::query()
                    ->with(['sourceTicket', 'targetTicket', 'ticketLinkType'])
                    ->where(function ($query) use ($ticket): void {
                        $query
                            ->where('source_ticket_id', $ticket->id)
                            ->orWhere('target_ticket_id', $ticket->id);
                    })
                    ->orderBy('id')
                    ->get()
                    ->each(fn (TicketLink $ticketLink) => $ticketLink->setAttribute('current_ticket_id', $ticket->id)),
            )->resolve(),
            'parentTicketOptions' => TicketReferenceResource::collection(
                Ticket::query()
                    ->where('project_id', $project->id)
                    ->whereKeyNot($ticket->id)
                    ->whereHas('ticketType', fn ($query) => $query->where('is_parent', true))
                    ->orderByDesc('sequence_number')
                    ->get(),
            )->resolve(),
            'project' => ProjectResource::make($project)->resolve(),
            'repositoryBranches' => TicketRepositoryBranchResource::collection(
                $this->resolveTicketBranchMatches->handle(
                    $user,
                    $project,
                    $ticket,
                ),
            )->resolve(),
            'repositoryPullRequests' => TicketRepositoryPullRequestResource::collection(
                $this->resolveTicketPullRequestMatches->handle(
                    $user,
                    $project,
                    $ticket,
                ),
            )->resolve(),
            'status' => session('status'),
            'suggestedBranchName' => $this->buildSuggestedTicketBranchName->handle($ticket),
            'ticket' => TicketResource::make($displayTicket)->resolve(),
            'ticketFieldDefinitions' => TicketFieldDefinitionResource::collection($project->ticketFieldDefinitions()->get())->resolve(),
            'ticketLinkOptions' => TicketReferenceResource::collection(
                Ticket::query()
                    ->where('project_id', $project->id)
                    ->whereKeyNot($ticket->id)
                    ->orderByDesc('sequence_number')
                    ->get(),
            )->resolve(),
            'ticketLinkTypes' => TicketLinkTypeResource::collection($project->ticketLinkTypes()->get())->resolve(),
            'ticketPriorities' => TicketPriorityResource::collection($project->ticketPriorities()->get())->resolve(),
            'ticketTypes' => TicketTypeResource::collection($project->ticketTypes()->get())->resolve(),
            'users' => UserResource::collection(
                User::query()
                    ->orderBy('name')
                    ->get(),
            )->resolve(),
        ]);
    }

    public function update(
        UpdateProjectTicketRequest $request,
        Project $project,
        Ticket $ticket,
    ): RedirectResponse {

        $user = $request->user();
        abort_unless(
            $this->permissionService->allows($user, Permission::ProjectWrite, $project),
            403,
        );

        $validated = $request->validated();

        $wasUpdated = $this->updateProjectTicket->handle(
            $ticket,
            $user,
            $validated,
        );

        $statusMessage = $wasUpdated
            ? "{$ticket->ticket_key} was updated."
            : 'No ticket changes were detected.';

        return to_route('projects.tickets.show', [$project, $ticket])
            ->with('status', $statusMessage);
    }
}