<?php

namespace App\Livewire\Tasks;

use App\Models\Project;
use App\Models\Task;
use Livewire\Attributes\Layout;
use Livewire\Component;

#[Layout('components.layouts.app')]
class Index extends Component
{
    public bool $showForm = false;

    public ?int $editingId = null;

    public string $title = '';

    public ?string $description = null;

    public string $status = 'todo';

    public ?int $projectId = null;

    public int $priority = 0;

    public ?string $dueAt = null;

    public ?string $estimatedHours = null;

    public ?string $actualHours = null;

    public string $search = '';

    public string $statusFilter = '';

    public string $priorityFilter = '';

    public ?int $projectFilter = null;

    public function mount()
    {
        // If project_id is passed as a query parameter, filter by it
        if (request()->has('project_id')) {
            $this->projectFilter = (int) request('project_id');
        }
    }

    public function render()
    {
        $query = Task::with(['project', 'comments']);

        if ($this->search) {
            $query->where('title', 'like', '%' . $this->search . '%')
                ->orWhere('description', 'like', '%' . $this->search . '%');
        }

        if ($this->statusFilter) {
            $query->where('status', $this->statusFilter);
        }

        if ($this->priorityFilter) {
            $query->where('priority', $this->priorityFilter);
        }

        if ($this->projectFilter) {
            $query->where('project_id', $this->projectFilter);
        }

        $tasks = $query->orderBy('priority', 'desc')->orderBy('created_at')->get();

        return view('livewire.tasks.index', [
            'tasks' => $tasks,
            'projects' => Project::orderBy('name')->get(),
            'statuses' => Task::STATUSES,
            'totalTasks' => Task::count(),
            'todoTasks' => Task::todo()->count(),
            'inProgressTasks' => Task::inProgress()->count(),
            'doneTasks' => Task::done()->count(),
            'blockedTasks' => Task::blocked()->count(),
            'waitingReviewTasks' => Task::waitingReview()->count(),
            'dueSoonTasks' => Task::dueSoon()->count(),
            'overdueTasks' => Task::overdue()->count(),
        ]);
    }

    public function create(): void
    {
        $this->resetForm();
        // Pre-select the filtered project if one is selected
        if ($this->projectFilter) {
            $this->projectId = $this->projectFilter;
        }
        $this->showForm = true;
    }

    public function edit(int $id): void
    {
        $task = Task::findOrFail($id);
        $this->editingId = $task->id;
        $this->title = $task->title;
        $this->description = $task->description;
        $this->status = $task->status;
        $this->projectId = $task->project_id;
        $this->priority = $task->priority;
        $this->dueAt = $task->due_at?->format('Y-m-d\TH:i') ?? '';
        $this->estimatedHours = $task->estimated_hours;
        $this->actualHours = $task->actual_hours;
        $this->showForm = true;
    }

    public function save(): void
    {
        $validated = $this->validate([
            'title' => ['required', 'string', 'max:255'],
            'description' => ['nullable', 'string'],
            'status' => ['required', 'string', 'in:' . implode(',', Task::STATUSES)],
            'projectId' => ['nullable', 'integer', 'exists:projects,id'],
            'priority' => ['integer', 'min:0', 'max:10'],
            'dueAt' => ['nullable', 'date'],
            'estimatedHours' => ['nullable', 'numeric', 'min:0'],
            'actualHours' => ['nullable', 'numeric', 'min:0'],
        ]);

        Task::updateOrCreate(['id' => $this->editingId], [
            'title' => $validated['title'],
            'description' => $validated['description'],
            'status' => $validated['status'],
            'project_id' => $validated['projectId'],
            'priority' => $validated['priority'],
            'due_at' => $validated['dueAt'] ?: null,
            'estimated_hours' => $validated['estimatedHours'] ?: null,
            'actual_hours' => $validated['actualHours'] ?: null,
        ]);

        $this->resetForm();
        $this->showForm = false;
    }

    public function delete(int $id): void
    {
        Task::findOrFail($id)->delete();
    }

    public function changeStatus(int $id, string $newStatus): void
    {
        if (!in_array($newStatus, Task::STATUSES)) {
            return;
        }

        $task = Task::findOrFail($id);
        $task->update(['status' => $newStatus]);

        // Auto-set timestamps based on status
        if ($newStatus === 'in_progress' && !$task->started_at) {
            $task->update(['started_at' => now()]);
        }
        
        if ($newStatus === 'done' && !$task->completed_at) {
            $task->update(['completed_at' => now()]);
        }
        
        if ($newStatus !== 'in_progress' && $newStatus !== 'done') {
            $task->update(['started_at' => null, 'completed_at' => null]);
        }
    }

    public function clearFilters(): void
    {
        $this->search = '';
        $this->statusFilter = '';
        $this->priorityFilter = '';
        $this->projectFilter = null;
    }

    public function resetForm(): void
    {
        $this->editingId = null;
        $this->title = '';
        $this->description = null;
        $this->status = 'todo';
        $this->projectId = null;
        $this->priority = 0;
        $this->dueAt = null;
        $this->estimatedHours = null;
        $this->actualHours = null;
        $this->resetValidation();
    }

    public function getStatusColor(string $status): string
    {
        return match ($status) {
            'todo' => 'bg-gray-100 text-gray-800',
            'in_progress' => 'bg-blue-100 text-blue-800',
            'done' => 'bg-green-100 text-green-800',
            'blocked' => 'bg-red-100 text-red-800',
            'waiting_review' => 'bg-yellow-100 text-yellow-800',
            default => 'bg-gray-100 text-gray-800',
        };
    }

    public function getPriorityLabel(int $priority): string
    {
        if ($priority === 0) return 'None';
        if ($priority <= 3) return 'Low';
        if ($priority <= 6) return 'Medium';
        if ($priority <= 8) return 'High';
        return 'Critical';
    }

    public function getCommentsCount(int $taskId): int
    {
        return \App\Models\TaskComment::where('task_id', $taskId)->count();
    }

    public function startTracking(int $id): void
    {
        $task = Task::findOrFail($id);
        if ($task->status !== 'in_progress') {
            $task->update(['status' => 'in_progress', 'started_at' => now()]);
        }
    }

    public function stopTracking(int $id): void
    {
        // This would need more complex time tracking logic
        // For now, just mark as done
        $task = Task::findOrFail($id);
        $task->update(['status' => 'done', 'completed_at' => now()]);
    }
}