<?php

namespace Tests\Feature\Mcp;

use App\Actions\ProjectTicketMetadata\InitializeProjectTicketMetadata;
use App\Mcp\Servers\KanbanGitServer;
use App\Mcp\Tools\GetTicket;
use App\Mcp\Tools\ListMyAssignedTickets;
use App\Mcp\Tools\ListTicketsByStatus;
use App\Mcp\Tools\MoveTicketStatus;
use App\Mcp\Tools\UpdateTicketAssignee;
use App\Mcp\Tools\UpdateTicketDescription;
use App\Models\BoardColumn;
use App\Models\Project;
use App\Models\Ticket;
use App\Models\TicketStatus;
use App\Models\User;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Illuminate\Testing\Fluent\AssertableJson;
use Tests\TestCase;

class KanbanGitMcpTest extends TestCase
{
    use RefreshDatabase;

    public function test_unauthenticated_http_mcp_endpoint_returns_unauthorized(): void
    {
        $this->postJson('/mcp/kanbangit', [
            'id' => 1,
            'jsonrpc' => '2.0',
            'method' => 'tools/list',
            'params' => [],
        ])->assertUnauthorized();
    }

    public function test_valid_application_key_can_list_tools_over_http(): void
    {
        $user = User::factory()->create();

        $this->withApplicationKey($user)
            ->postJson('/mcp/kanbangit', [
                'id' => 1,
                'jsonrpc' => '2.0',
                'method' => 'tools/list',
                'params' => [],
            ])
            ->assertOk()
            ->assertJsonPath('result.tools.0.name', 'list_my_assigned_tickets')
            ->assertJsonPath('result.tools.5.name', 'move_ticket_status');
    }

    public function test_list_my_assigned_tickets_returns_only_visible_current_user_tickets(): void
    {
        $user = User::factory()->create([
            'name' => 'MCP User',
        ]);
        $otherUser = User::factory()->create();
        $visibleProject = $this->project('CORE', 'Visible project');
        $hiddenProject = $this->project('HIDE', 'Hidden project');
        $visibleStatus = $visibleProject->ticketStatuses()->firstOrFail();
        $hiddenStatus = $hiddenProject->ticketStatuses()->firstOrFail();

        $this->syncProjectPermissions($visibleProject, $user, ['view']);

        $this->ticket($visibleProject, $visibleStatus, [
            'assignee_user_id' => $user->id,
            'sequence_number' => 2,
            'ticket_key' => 'CORE-2',
            'title' => 'Visible assigned ticket',
        ]);
        $this->ticket($visibleProject, $visibleStatus, [
            'assignee_user_id' => $otherUser->id,
            'sequence_number' => 3,
            'ticket_key' => 'CORE-3',
            'title' => 'Other user ticket',
        ]);
        $this->ticket($hiddenProject, $hiddenStatus, [
            'assignee_user_id' => $user->id,
            'sequence_number' => 1,
            'ticket_key' => 'HIDE-1',
            'title' => 'Hidden assigned ticket',
        ]);

        KanbanGitServer::actingAs($user)
            ->tool(ListMyAssignedTickets::class)
            ->assertOk()
            ->assertStructuredContent(fn (AssertableJson $json) => $json
                ->where('meta.assignee.name', 'MCP User')
                ->where('data.0.project.name', 'Visible project')
                ->where('data.0.tickets.0.ticket_key', 'CORE-2')
                ->count('data.0.tickets', 1)
                ->count('data', 1)
                ->etc());
    }

    public function test_list_tickets_by_status_works_globally_and_with_project_filter(): void
    {
        $user = User::factory()->create();
        $visibleProject = $this->project('CORE', 'Core project');
        $otherVisibleProject = $this->project('OPS', 'Ops project');
        $visibleStatus = $this->ticketStatus($visibleProject, 'Ready');
        $otherStatus = $this->ticketStatus($otherVisibleProject, 'Ready');

        $this->syncProjectPermissions($visibleProject, $user, ['view']);
        $this->syncProjectPermissions($otherVisibleProject, $user, ['view']);

        $this->ticket($visibleProject, $visibleStatus, [
            'sequence_number' => 1,
            'ticket_key' => 'CORE-1',
            'title' => 'Core ready ticket',
        ]);
        $this->ticket($otherVisibleProject, $otherStatus, [
            'sequence_number' => 1,
            'ticket_key' => 'OPS-1',
            'title' => 'Ops ready ticket',
        ]);

        KanbanGitServer::actingAs($user)
            ->tool(ListTicketsByStatus::class, [
                'ticket_status_id' => $visibleStatus->id,
            ])
            ->assertOk()
            ->assertStructuredContent(fn (AssertableJson $json) => $json
                ->where('meta.statuses.0.id', $visibleStatus->id)
                ->where('data.0.project.name', 'Core project')
                ->where('data.0.tickets.0.ticket_key', 'CORE-1')
                ->count('data', 1)
                ->etc());

        KanbanGitServer::actingAs($user)
            ->tool(ListTicketsByStatus::class, [
                'project_id' => $otherVisibleProject->id,
                'status_name' => 'Ready',
            ])
            ->assertOk()
            ->assertStructuredContent(fn (AssertableJson $json) => $json
                ->where('meta.statuses.0.id', $otherStatus->id)
                ->where('data.0.project.name', 'Ops project')
                ->where('data.0.tickets.0.ticket_key', 'OPS-1')
                ->count('data', 1)
                ->etc());
    }

    public function test_status_ticket_lists_exclude_invisible_projects(): void
    {
        $user = User::factory()->create();
        $visibleProject = $this->project('CORE', 'Visible project');
        $hiddenProject = $this->project('HIDE', 'Hidden project');
        $visibleStatus = $this->ticketStatus($visibleProject, 'Visible Review');
        $hiddenStatus = $this->ticketStatus($hiddenProject, 'Hidden Review');

        $this->syncProjectPermissions($visibleProject, $user, ['view']);

        $this->ticket($visibleProject, $visibleStatus, [
            'ticket_key' => 'CORE-1',
            'title' => 'Visible status ticket',
        ]);
        $this->ticket($hiddenProject, $hiddenStatus, [
            'ticket_key' => 'HIDE-1',
            'title' => 'Hidden status ticket',
        ]);

        KanbanGitServer::actingAs($user)
            ->tool(ListTicketsByStatus::class, [
                'ticket_status_id' => $visibleStatus->id,
            ])
            ->assertOk()
            ->assertStructuredContent(fn (AssertableJson $json) => $json
                ->where('data.0.tickets.0.ticket_key', 'CORE-1')
                ->count('data', 1)
                ->etc());

        KanbanGitServer::actingAs($user)
            ->tool(ListTicketsByStatus::class, [
                'ticket_status_id' => $hiddenStatus->id,
            ])
            ->assertHasErrors(['Ticket status was not found in a visible project.']);
    }

    public function test_get_ticket_returns_visible_ticket_detail(): void
    {
        $user = User::factory()->create();
        $project = $this->project('CORE', 'Core project');
        $status = $project->ticketStatuses()->firstOrFail();
        $ticket = $this->ticket($project, $status, [
            'description' => 'Detailed MCP description',
            'ticket_key' => 'CORE-1',
            'title' => 'Detailed ticket',
        ]);

        $this->syncProjectPermissions($project, $user, ['view']);

        KanbanGitServer::actingAs($user)
            ->tool(GetTicket::class, [
                'ticket_id' => $ticket->id,
            ])
            ->assertOk()
            ->assertStructuredContent(fn (AssertableJson $json) => $json
                ->where('data.project.name', 'Core project')
                ->where('data.ticket.ticket_key', 'CORE-1')
                ->where('data.ticket.description', 'Detailed MCP description')
                ->etc());
    }

    public function test_description_update_requires_write_permission_and_preserves_unrelated_fields(): void
    {
        $user = User::factory()->create();
        $assignee = User::factory()->create();
        $project = $this->project('CORE', 'Core project');
        $status = $project->ticketStatuses()->firstOrFail();
        $ticket = $this->ticket($project, $status, [
            'assignee_user_id' => $assignee->id,
            'description' => 'Old description',
            'story_points' => 8,
            'ticket_key' => 'CORE-1',
            'title' => 'Description ticket',
        ]);

        $this->syncProjectPermissions($project, $user, ['view']);

        KanbanGitServer::actingAs($user)
            ->tool(UpdateTicketDescription::class, [
                'description' => 'New description',
                'ticket_id' => $ticket->id,
            ])
            ->assertHasErrors(['cannot update tickets']);

        $this->syncProjectPermissions($project, $user, ['write']);

        KanbanGitServer::actingAs($user)
            ->tool(UpdateTicketDescription::class, [
                'description' => 'New description',
                'ticket_id' => $ticket->id,
            ])
            ->assertOk()
            ->assertStructuredContent(fn (AssertableJson $json) => $json
                ->where('data.ticket.description', 'New description')
                ->where('data.ticket.assignee_user_id', $assignee->id)
                ->where('data.ticket.story_points', 8)
                ->etc());
    }

    public function test_assignee_update_supports_assigning_and_unassigning(): void
    {
        $user = User::factory()->create();
        $assignee = User::factory()->create();
        $project = $this->project('CORE', 'Core project');
        $status = $project->ticketStatuses()->firstOrFail();
        $ticket = $this->ticket($project, $status, [
            'assignee_user_id' => null,
            'ticket_key' => 'CORE-1',
            'title' => 'Assignee ticket',
        ]);

        $this->syncProjectPermissions($project, $user, ['write']);

        KanbanGitServer::actingAs($user)
            ->tool(UpdateTicketAssignee::class, [
                'assignee_user_id' => $assignee->id,
                'ticket_id' => $ticket->id,
            ])
            ->assertOk()
            ->assertStructuredContent(fn (AssertableJson $json) => $json
                ->where('data.ticket.assignee_user_id', $assignee->id)
                ->etc());

        KanbanGitServer::actingAs($user)
            ->tool(UpdateTicketAssignee::class, [
                'assignee_user_id' => null,
                'ticket_id' => $ticket->id,
            ])
            ->assertOk()
            ->assertStructuredContent(fn (AssertableJson $json) => $json
                ->where('data.ticket.assignee_user_id', null)
                ->etc());
    }

    public function test_status_move_requires_write_permission_and_allowed_transition(): void
    {
        $user = User::factory()->create();
        $project = $this->project('CORE', 'Core project');
        $backlogStatus = $project->ticketStatuses()->firstOrFail();
        $doingStatus = $this->ticketStatus($project, 'Doing');
        $blockedStatus = $this->ticketStatus($project, 'Blocked');
        $ticket = $this->ticket($project, $backlogStatus, [
            'ticket_key' => 'CORE-1',
            'title' => 'Move ticket',
        ]);

        $backlogStatus->allowedTargetStatuses()->sync([$doingStatus->id]);
        $this->syncProjectPermissions($project, $user, ['view']);

        KanbanGitServer::actingAs($user)
            ->tool(MoveTicketStatus::class, [
                'ticket_id' => $ticket->id,
                'ticket_status_id' => $doingStatus->id,
            ])
            ->assertHasErrors(['cannot update tickets']);

        $this->syncProjectPermissions($project, $user, ['write']);

        KanbanGitServer::actingAs($user)
            ->tool(MoveTicketStatus::class, [
                'ticket_id' => $ticket->id,
                'ticket_status_id' => $blockedStatus->id,
            ])
            ->assertHasErrors(['allowed to move']);

        KanbanGitServer::actingAs($user)
            ->tool(MoveTicketStatus::class, [
                'status_slug' => 'doing',
                'ticket_id' => $ticket->id,
            ])
            ->assertOk()
            ->assertStructuredContent(fn (AssertableJson $json) => $json
                ->where('data.ticket.ticket_status_id', $doingStatus->id)
                ->where('meta.moved', true)
                ->where('meta.destination_label', 'Doing')
                ->etc());
    }

    public function test_ambiguous_status_name_returns_mcp_error(): void
    {
        $user = User::factory()->create();
        $firstProject = $this->project('ONE', 'First project');
        $secondProject = $this->project('TWO', 'Second project');
        $this->ticketStatus($firstProject, 'Review');
        $this->ticketStatus($secondProject, 'Review');

        $this->syncProjectPermissions($firstProject, $user, ['view']);
        $this->syncProjectPermissions($secondProject, $user, ['view']);

        KanbanGitServer::actingAs($user)
            ->tool(ListTicketsByStatus::class, [
                'status_name' => 'Review',
            ])
            ->assertHasErrors(['Status lookup is ambiguous'])
            ->assertSee(['First project', 'Second project']);
    }

    private function project(string $key, string $name): Project
    {
        $project = Project::factory()->create([
            'key' => $key,
            'name' => $name,
        ]);

        app(InitializeProjectTicketMetadata::class)->handle($project);

        return $project;
    }

    private function ticketStatus(Project $project, string $name): TicketStatus
    {
        $position = $project->boardColumns()->count() + 1;
        $boardColumn = BoardColumn::factory()->for($project)->create([
            'name' => $name,
            'position' => $position,
        ]);

        return TicketStatus::factory()
            ->for($project)
            ->for($boardColumn)
            ->create([
                'name' => $name,
                'position' => $position,
            ]);
    }

    /**
     * @param  array<string, mixed>  $attributes
     */
    private function ticket(Project $project, TicketStatus $ticketStatus, array $attributes = []): Ticket
    {
        $priority = $project->ticketPriorities()->firstOrFail();
        $type = $project->ticketTypes()->where('is_parent', false)->firstOrFail();

        return Ticket::factory()->create([
            'project_id' => $project->id,
            'sequence_number' => 1,
            'ticket_key' => "{$project->key}-1",
            'ticket_priority_id' => $priority->id,
            'ticket_status_id' => $ticketStatus->id,
            'ticket_type_id' => $type->id,
            'title' => 'MCP ticket',
            ...$attributes,
        ]);
    }
}