<?php

namespace App\Http\Controllers\Api\Admin\OsManager;

use App\Http\Controllers\Controller;
use App\Models\Os;
use App\Models\OsGroup;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;

class OsController extends Controller
{
    public function store(Request $request): JsonResponse
    {
        $validated = $request->validate([
            'version'        => 'required|string|max:100',
            'os_group_id'    => 'required|integer|exists:os_group,id',
            'template_id'    => 'nullable|string|max:255',
            'module_host_id' => 'nullable|integer|exists:module_host,id',
            'is_active'      => 'boolean',
        ]);

        $os = Os::create([
            'version'        => $validated['version'],
            'os_group_id'    => $validated['os_group_id'],
            'template_id'    => $validated['template_id'] ?? null,
            'module_host_id' => $validated['module_host_id'] ?? null,
            'status'         => ($validated['is_active'] ?? true) ? 1 : 0,
        ]);

        return response()->json([
            'error'   => false,
            'message' => 'Thêm OS thành công.',
            'data'    => $this->formatOs($os),
        ], 201);
    }

    public function update(Request $request, int $id): JsonResponse
    {
        $os = Os::find($id);

        if (! $os) {
            return response()->json(['error' => true, 'message' => 'Không tìm thấy OS.'], 404);
        }

        $validated = $request->validate([
            'version'        => 'sometimes|required|string|max:100',
            'os_group_id'    => 'sometimes|integer|exists:os_group,id',
            'template_id'    => 'nullable|string|max:255',
            'module_host_id' => 'nullable|integer|exists:module_host,id',
            'is_active'      => 'boolean',
        ]);

        $os->update([
            'version'        => $validated['version']        ?? $os->version,
            'os_group_id'    => $validated['os_group_id']    ?? $os->os_group_id,
            'template_id'    => array_key_exists('template_id', $validated) ? $validated['template_id'] : $os->template_id,
            'module_host_id' => array_key_exists('module_host_id', $validated) ? $validated['module_host_id'] : $os->module_host_id,
            'status'         => isset($validated['is_active']) ? ($validated['is_active'] ? 1 : 0) : $os->status,
        ]);

        return response()->json([
            'error'   => false,
            'message' => 'Cập nhật OS thành công.',
            'data'    => $this->formatOs($os->fresh()),
        ]);
    }

    public function destroy(int $id): JsonResponse
    {
        $os = Os::find($id);

        if (! $os) {
            return response()->json(['error' => true, 'message' => 'Không tìm thấy OS.'], 404);
        }

        $os->delete();

        return response()->json(['error' => false, 'message' => 'Xoá OS thành công.']);
    }

    // ── helpers ──────────────────────────────────────────────────────────────

    private function formatOs(Os $os): array
    {
        $os->loadMissing('host.datacenter.vCenter');
        $host = $os->host;

        return [
            'id'             => $os->id,
            'version'        => $os->version,
            'template_id'    => $os->template_id,
            'is_active'      => (bool) $os->status,
            'os_group_id'    => $os->os_group_id,
            'module_host_id' => $os->module_host_id,
            'host_name'      => $host ? $host->name : null,
            'datacenter_name' => $host?->datacenter?->name,
            'vcenter_name'    => $host?->datacenter?->vCenter?->host,
        ];
    }
}