<?php

namespace App\Http\Controllers\Admin;

use App\Helpers\ResponseCode;
use App\Models\Admin;
use App\Models\Department;
use App\Models\OperateLog;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Hash;
use Rap2hpoutre\FastExcel\FastExcel;
use Spatie\Permission\Models\Role;

class AdminController extends CommonController
{
    /**
     * @OA\Get(
     *     path="/api/admin/admin",
     *     tags={"后台管理"},
     *     summary="获取后台用户",
     *     description="",
     *     @OA\Parameter(name="page_size", in="query", @OA\Schema(type="string"), required=false, description="每页显示的条数"),
     *     @OA\Parameter(name="page", in="query", @OA\Schema(type="string"), required=false, description="页码"),
     *     @OA\Parameter(name="sort_name", in="query", @OA\Schema(type="string"), required=false, description="排序字段名字"),
     *     @OA\Parameter(name="sort_type", in="query", @OA\Schema(type="string"), required=false, description="排序类型"),
     *     @OA\Parameter(name="keyword", in="query", @OA\Schema(type="string"), required=true, description="关键词"),
     *     @OA\Parameter(name="token", in="query", @OA\Schema(type="string"), required=true, description="token"),
     *     @OA\Response(
     *      response="200",
     *      description="获取后台用户"
     *     )
     * )
     */
    public function index()
    {
        $all = \request()->all();
        $data = (new Admin())->with(["roles", "department"])->orderBy("sortnumber");
        if (request()->keyword) {
            $data = $data->where(function ($query) {
                $query->where("name", "like", "%" . request()->keyword . "%")
                    ->orWhere("username", "like", "%" . request()->keyword . "%")
                    ->orWhere("mobile", "like", "%" . request()->keyword . "%");
            });
        }
        $data = $data->orderBy($all['sort_name'] ?? 'id', $all['sort_type'] ?? 'desc')->paginate($all['page_size'] ?? 20);
        return $this->success($data);
    }

    /**
     * @OA\Get(
     *     path="/api/admin/show",
     *     tags={"后台管理"},
     *     summary="获取后台用户详情",
     *     description="",
     *     @OA\Parameter(name="id", in="query", @OA\Schema(type="string"), required=true, description="id"),
     *     @OA\Parameter(name="token", in="query", @OA\Schema(type="string"), required=true, description="token"),
     *     @OA\Response(
     *      response="200",
     *      description="获取后台用户"
     *     )
     * )
     */
    public function show()
    {
        $data = (new Admin())->with(["roles", "department"])->find(request()->id);
        return $this->success($data);
    }


    /**
     * @OA\Post(
     *     path="/api/admin/admin/save",
     *     tags={"后台管理"},
     *     summary="保存后台用户",
     *     description="",
     *     @OA\Parameter(name="token", in="query", @OA\Schema(type="string"), required=true, description="token"),
     *     @OA\Parameter(name="id", in="query", @OA\Schema(type="integer"), description="菜单ID，为空表示新增，不为空表示更新"),
     *     @OA\Parameter(name="name", in="query", @OA\Schema(type="string"), required=true, description="名称"),
     *     @OA\Parameter(name="username", in="query", @OA\Schema(type="string"), required=true, description="用户名"),
     *     @OA\Parameter(name="password", in="query", @OA\Schema(type="string"), description="密码，新建时请前端处理为必填，修改时留空表示不修改"),
     *     @OA\Parameter(name="mobile", in="query", @OA\Schema(type="string"), description="手机号码"),
     *     @OA\Parameter(name="department_id", in="query", @OA\Schema(type="integer"), description="所属部门ID"),
     *     @OA\Parameter(name="position", in="query", @OA\Schema(type="string"), description="职位"),
     *     @OA\Parameter(name="birthday", in="query", @OA\Schema(type="string"), description="生日"),
     *     @OA\Parameter(name="email", in="query", @OA\Schema(type="string"), description="邮箱"),
     *     @OA\Parameter(name="status", in="query", @OA\Schema(type="string"), description="状态0禁用1启用"),
     *     @OA\Parameter(name="sortnumber", in="query", @OA\Schema(type="integer"), description="同级排序，默认为0"),
     *     @OA\Response(
     *      response="200",
     *      description="保存后台用户"
     *     )
     * )
     */
    public function save()
    {
        if (request()->id) {
            return $this->update();
        } else {
            return $this->store();
        }
    }

    public function store()
    {
        DB::beginTransaction();
        try {
            $data = (new Admin())->filterRequestColumns(request(), ["id"]);
            $model = Admin::create($data);
            DB::commit();
            // 加日志
            OperateLog::addLogs($this->getUser(), "新增管理员[{$model->name}]成功");
            return $this->success($model);
        } catch (\Exception $exception) {
            DB::rollBack();
            // 加日志
            OperateLog::addLogs($this->getUser(), "新增管理员失败", $exception->getMessage());
            return $this->fail([$exception->getCode(), $exception->getMessage()]);
        }
    }

    public function update()
    {
        DB::beginTransaction();
        $model = Admin::find(request()->id);
        try {
            $data = $model->filterRequestColumns(request(), ["id"]);
            $model->update($data);
            DB::commit();
            // 加日志
            OperateLog::addLogs($this->getUser(), "更新管理员[{$model->name}]信息成功");
            return $this->success($model);
        } catch (\Exception $exception) {
            DB::rollBack();
            // 加日志
            OperateLog::addLogs($this->getUser(), "更新管理员[{$model->name}]信息失败", $exception->getMessage());
            return $this->fail([$exception->getCode(), $exception->getMessage()]);
        }
    }

    /**
     * @OA\Post(
     *     path="/api/admin/admin/delete",
     *     tags={"后台管理"},
     *     summary="删除后台用户",
     *     description="",
     *     @OA\Parameter(name="token", in="query", @OA\Schema(type="string"), required=true, description="token"),
     *     @OA\Parameter(name="id", in="query", @OA\Schema(type="integer"), description="ID"),
     *     @OA\Response(
     *      response="200",
     *      description="删除后台用户"
     *     )
     * )
     */
    public function delete(Request $request)
    {
        $admin = Admin::find($request->id);
        try {
            $admin->delete();
            // 加日志
            OperateLog::addLogs($this->getUser(), "删除管理员[{$admin->name}]用户成功");
            return $this->success("删除成功");
        } catch (\Exception $exception) {
            // 加日志
            OperateLog::addLogs($this->getUser(), "删除管理员[{$admin->name}]失败", $exception->getMessage());
            return $this->fail([$exception->getCode(), $exception->getMessage()]);
        }
    }

    /**
     * @OA\Post(
     *     path="/api/admin/admin/set-roles",
     *     tags={"后台管理"},
     *     summary="后台用户授权",
     *     description="",
     *     @OA\Parameter(name="token", in="query", @OA\Schema(type="string"), required=true, description="token"),
     *     @OA\Parameter(name="id", in="query", @OA\Schema(type="integer"), required=true, description="ID"),
     *     @OA\Parameter(name="role_id", in="query", @OA\Schema(type="object"), required=true, description="角色id，数组形式"),
     *     @OA\Response(
     *      response="200",
     *      description="后台用户授权"
     *     )
     * )
     */

    public function setRoles(Request $request)
    {
        $admin = (new Admin())->find($request->id);
        $roles = (new Role())->whereIn("id", (array)$request->role_id)->get();

        try {
            $admin->syncRoles($roles);
            // 加日志
            OperateLog::addLogs($this->getUser(), "用户[{$admin->name}]授权成功");
            return $this->success("授权成功");
        } catch (\Exception $exception) {
            // 加日志
            OperateLog::addLogs($this->getUser(), "用户[{$admin->name}]授权失败", $exception->getMessage());
            return $this->fail([$exception->getCode(), $exception->getMessage()]);
        }
    }

    /**
     * @OA\Post(
     *     path="/api/admin/admin/set-roles-many",
     *     tags={"后台管理"},
     *     summary="后台用户授权批量处理",
     *     description="",
     *     @OA\Parameter(name="token", in="query", @OA\Schema(type="string"), required=true, description="token"),
     *     @OA\Parameter(name="ids", in="query", @OA\Schema(type="object"), required=true, description="用户id数组"),
     *     @OA\Parameter(name="role_id", in="query", @OA\Schema(type="object"), required=true, description="角色id"),
     *     @OA\Response(
     *      response="200",
     *      description="后台用户授权"
     *     )
     * )
     */

    public function setRolesMany(Request $request)
    {
        $ids = $request->get('ids', []);
        DB::beginTransaction();
        try {
            $model_has_roles = config("permission.table_names.model_has_roles");
            $admin_roles = [];
            foreach ($ids as $id) {
                $admin_roles[] = [
                    "model_type" => Admin::class,
                    "model_id" => $id,
                    "role_id" => $request->role_id
                ];
            }
            DB::table($model_has_roles)->where('role_id', $request->role_id)->where('model_type', Admin::class)->delete();
            DB::table($model_has_roles)->insert($admin_roles);
            // 加日志
            OperateLog::addLogs($this->getUser(), '用户批量授权成功');
            DB::commit();
            return $this->success("授权成功");
        } catch (\Exception $exception) {
            DB::rollBack();
            // 加日志
            OperateLog::addLogs($this->getUser(), '用户批量授权失败', $exception->getMessage());
            return $this->fail([$exception->getCode(), $exception->getMessage()]);
        }
    }

    public function importPreview(Request $request)
    {
        try {
            $rows = $this->parseImportRows($request);
            $previewRows = [];
            $existsCount = 0;
            $missingDepartmentRows = [];
            foreach ($rows as $row) {
                if ($row['exists']) {
                    $existsCount++;
                }
                if (!$row['department_exists']) {
                    $missingDepartmentRows[] = $row['line_no'];
                }
                $previewRows[] = [
                    'line_no' => $row['line_no'],
                    'name' => $row['name'],
                    'username' => $row['username'],
                    'mobile' => $row['mobile'],
                    'department' => $row['department'],
                    'position' => $row['position'],
                    'birthday' => $row['birthday'],
                    'email' => $row['email'],
                    'password_filled' => $row['password_filled'],
                    'department_exists' => $row['department_exists'],
                    'exists' => $row['exists'],
                    'message' => $row['message'],
                ];
            }
            return $this->success([
                'rows' => $previewRows,
                'exists_count' => $existsCount,
                'missing_department_rows' => $missingDepartmentRows,
                'can_import' => count($missingDepartmentRows) === 0,
            ]);
        } catch (\Exception $exception) {
            return $this->fail([$exception->getCode(), $exception->getMessage()]);
        }
    }

    public function importSubmit(Request $request)
    {
        try {
            $rows = $this->parseImportRows($request);
            $forceUpdate = (bool)$request->get('force_update', false);
            $missingDepartmentNames = [];
            $existsUsernames = [];
            foreach ($rows as $row) {
                if (!$row['department_exists']) {
                    $missingDepartmentNames[] = $row['department'];
                }
                if ($row['exists']) {
                    $existsUsernames[] = $row['username'];
                }
            }
            if (!empty($missingDepartmentNames)) {
                $missingDepartmentNames = array_values(array_unique($missingDepartmentNames));
                return $this->fail([ResponseCode::ERROR_BUSINESS, '部门不存在：' . implode('、', $missingDepartmentNames) . '，请先创建部门后再导入']);
            }
            if (!$forceUpdate && !empty($existsUsernames)) {
                $existsUsernames = array_values(array_unique($existsUsernames));
                return $this->fail([ResponseCode::ERROR_BUSINESS, '用户' . implode('、', $existsUsernames) . '已存在，是否直接更新？']);
            }

            DB::beginTransaction();
            $created = 0;
            $updated = 0;
            foreach ($rows as $row) {
                $data = [
                    'name' => $row['name'],
                    'username' => $row['username'],
                    'department_id' => $row['department_id'],
                    'mobile' => $row['mobile'],
                    'position' => $row['position'] ?: null,
                    'birthday' => $row['birthday'],
                    'email' => $row['email'] ?: null,
                ];
                $model = Admin::where('username', $row['username'])->first();
                if ($model) {
                    if (!empty($row['password_plain'])) {
                        $data['password'] = Hash::make($row['password_plain']);
                    }
                    $model->update($data);
                    $updated++;
                } else {
                    if (!empty($row['password_plain'])) {
                        $data['password'] = Hash::make($row['password_plain']);
                    } else {
                        $data['password'] = Hash::make('Admin' . date('Y'));
                    }
                    Admin::create($data);
                    $created++;
                }
            }
            DB::commit();
            return $this->success([
                'created' => $created,
                'updated' => $updated,
                'total' => count($rows),
            ]);
        } catch (\Exception $exception) {
            if (DB::transactionLevel() > 0) {
                DB::rollBack();
            }
            return $this->fail([$exception->getCode(), $exception->getMessage()]);
        }
    }

    // 保留旧接口兼容，默认按“允许更新已存在用户”执行
    public function import(Request $request)
    {
        $request->merge(['force_update' => 1]);
        return $this->importSubmit($request);
    }

    private function parseImportRows(Request $request)
    {
        $file = $request->file('file');
        if (!($request->hasFile('file') && $file->isValid())) {
            throw new \Exception('文件不存在或无效', ResponseCode::ERROR_BUSINESS);
        }
        $sizeKb = floor($file->getSize() / 1024);
        if ($sizeKb >= 5 * 1024) {
            throw new \Exception('文件必须小于5M', ResponseCode::ERROR_BUSINESS);
        }
        $ext = strtolower($file->getClientOriginalExtension());
        if (!in_array($ext, ['xls', 'xlsx', 'csv'])) {
            throw new \Exception('仅支持xls/xlsx/csv格式', ResponseCode::ERROR_BUSINESS);
        }
        $dataArray = (new FastExcel)->import($file->getRealPath())->toArray();
        if (empty($dataArray)) {
            throw new \Exception('导入文件为空', ResponseCode::ERROR_BUSINESS);
        }
        $keyList = array_keys($dataArray[0]);
        $requiredHeaders = ['姓名', '用户名', '手机号', '所属部门'];
        foreach ($requiredHeaders as $header) {
            if (!in_array($header, $keyList)) {
                throw new \Exception($header . '字段不存在', ResponseCode::ERROR_BUSINESS);
            }
        }

        $rows = [];
        foreach ($dataArray as $index => $value) {
            $name = trim((string)($value['姓名'] ?? ''));
            $username = trim((string)($value['用户名'] ?? ''));
            $mobile = trim((string)($value['手机号'] ?? ''));
            $department = trim((string)($value['所属部门'] ?? ''));
            $position = trim((string)($value['职位'] ?? ''));
            $birthday = $this->normalizeImportBirthday($value['生日'] ?? null);
            $email = trim((string)($value['邮箱'] ?? ''));
            $passwordPlain = trim((string)($value['密码'] ?? ''));
            $passwordFilled = $passwordPlain !== '';

            if ($username === '' && $department === '' && $name === '' && $mobile === '') {
                continue;
            }
            if ($username === '' || $department === '' || $name === '' || $mobile === '') {
                throw new \Exception('第' . ($index + 2) . '行数据不完整（姓名/用户名/手机号/所属部门为必填）', ResponseCode::ERROR_BUSINESS);
            }
            $departmentId = Department::where('name', $department)->value('id');
            $exists = Admin::where('username', $username)->exists();
            $message = '';
            if (!$departmentId) {
                $message = '请先创建部门';
            } elseif ($exists) {
                $message = '用户' . $username . '已存在，是否直接更新';
            }
            $rows[] = [
                'line_no' => $index + 2,
                'username' => $username,
                'department' => $department,
                'department_id' => $departmentId,
                'department_exists' => !empty($departmentId),
                'name' => $name,
                'mobile' => $mobile,
                'position' => $position,
                'birthday' => $birthday,
                'email' => $email,
                'password_plain' => $passwordPlain,
                'password_filled' => $passwordFilled,
                'exists' => $exists,
                'message' => $message,
            ];
        }
        if (empty($rows)) {
            throw new \Exception('导入文件无有效数据', ResponseCode::ERROR_BUSINESS);
        }
        return $rows;
    }

    /**
     * 生日：支持 yyyy-MM-dd 文本或 Excel 日期序列号。
     */
    private function normalizeImportBirthday($value): ?string
    {
        if ($value === null || $value === '') {
            return null;
        }
        if (is_numeric($value)) {
            $excel = (float)$value;
            if ($excel > 20000 && $excel < 60000) {
                $unix = (int)(($excel - 25569) * 86400);

                return gmdate('Y-m-d', $unix);
            }
        }
        $s = trim((string)$value);
        if ($s === '') {
            return null;
        }
        if (preg_match('/^\d{4}-\d{2}-\d{2}/', $s)) {
            return substr($s, 0, 10);
        }

        return $s;
    }

}