'use server';


import { isRedirectError } from 'next/dist/client/components/redirect';
import { revalidatePath } from 'next/cache';
import { serverFetch } from '@/lib/api/fetch-wrapper';
import type { Role, RoleStats, PermissionMatrix, MenuTreeItem, ApiResponse, PaginatedResponse } from './types';

const API_URL = process.env.NEXT_PUBLIC_API_URL;

// ========== Role CRUD ==========

/**
 * 역할 목록 조회
 */
export async function fetchRoles(params?: {
  page?: number;
  size?: number;
  q?: string;
  is_hidden?: boolean;
}): Promise<ApiResponse<PaginatedResponse<Role>>> {
  try {
    const searchParams = new URLSearchParams();
    if (params?.page) searchParams.set('page', params.page.toString());
    if (params?.size) searchParams.set('per_page', params.size.toString());
    if (params?.q) searchParams.set('q', params.q);
    if (params?.is_hidden !== undefined) searchParams.set('is_hidden', params.is_hidden.toString());

    const url = `${API_URL}/api/v1/roles?${searchParams.toString()}`;
    const { response, error } = await serverFetch(url, { method: 'GET' });

    if (error) {
      return { success: false, error: error.message };
    }

    if (!response) {
      return { success: false, error: '역할 목록 조회에 실패했습니다.' };
    }

    const result = await response.json();

    if (!response.ok || !result.success) {
      return { success: false, error: result.message || '역할 목록 조회 실패' };
    }

    return { success: true, data: result.data };
  } catch (error) {
    if (isRedirectError(error)) throw error;
    console.error('Failed to fetch roles:', error);
    return { success: false, error: error instanceof Error ? error.message : '역할 목록 조회 실패' };
  }
}

/**
 * 역할 상세 조회
 */
export async function fetchRole(id: number): Promise<ApiResponse<Role>> {
  try {
    const { response, error } = await serverFetch(`${API_URL}/api/v1/roles/${id}`, { method: 'GET' });

    if (error) {
      return { success: false, error: error.message };
    }

    if (!response) {
      return { success: false, error: '역할 조회에 실패했습니다.' };
    }

    const result = await response.json();

    if (!response.ok || !result.success) {
      return { success: false, error: result.message || '역할 조회 실패' };
    }

    return { success: true, data: result.data };
  } catch (error) {
    if (isRedirectError(error)) throw error;
    console.error('Failed to fetch role:', error);
    return { success: false, error: error instanceof Error ? error.message : '역할 조회 실패' };
  }
}

/**
 * 역할 생성
 */
export async function createRole(data: {
  name: string;
  description?: string;
  is_hidden?: boolean;
}): Promise<ApiResponse<Role>> {
  try {
    const { response, error } = await serverFetch(`${API_URL}/api/v1/roles`, {
      method: 'POST',
      body: JSON.stringify(data),
    });

    if (error) {
      return { success: false, error: error.message };
    }

    if (!response) {
      return { success: false, error: '역할 생성에 실패했습니다.' };
    }

    const result = await response.json();

    if (!response.ok || !result.success) {
      return { success: false, error: result.message || '역할 생성 실패' };
    }

    revalidatePath('/settings/permissions');
    return { success: true, data: result.data };
  } catch (error) {
    if (isRedirectError(error)) throw error;
    console.error('Failed to create role:', error);
    return { success: false, error: error instanceof Error ? error.message : '역할 생성 실패' };
  }
}

/**
 * 역할 수정
 */
export async function updateRole(
  id: number,
  data: {
    name?: string;
    description?: string;
    is_hidden?: boolean;
  }
): Promise<ApiResponse<Role>> {
  try {
    const { response, error } = await serverFetch(`${API_URL}/api/v1/roles/${id}`, {
      method: 'PATCH',
      body: JSON.stringify(data),
    });

    if (error) {
      return { success: false, error: error.message };
    }

    if (!response) {
      return { success: false, error: '역할 수정에 실패했습니다.' };
    }

    const result = await response.json();

    if (!response.ok || !result.success) {
      return { success: false, error: result.message || '역할 수정 실패' };
    }

    revalidatePath('/settings/permissions');
    revalidatePath(`/settings/permissions/${id}`);
    return { success: true, data: result.data };
  } catch (error) {
    if (isRedirectError(error)) throw error;
    console.error('Failed to update role:', error);
    return { success: false, error: error instanceof Error ? error.message : '역할 수정 실패' };
  }
}

/**
 * 역할 삭제
 */
export async function deleteRole(id: number): Promise<ApiResponse<void>> {
  try {
    const { response, error } = await serverFetch(`${API_URL}/api/v1/roles/${id}`, {
      method: 'DELETE',
    });

    if (error) {
      return { success: false, error: error.message };
    }

    if (!response) {
      return { success: false, error: '역할 삭제에 실패했습니다.' };
    }

    const result = await response.json();

    if (!response.ok || !result.success) {
      return { success: false, error: result.message || '역할 삭제 실패' };
    }

    revalidatePath('/settings/permissions');
    return { success: true };
  } catch (error) {
    if (isRedirectError(error)) throw error;
    console.error('Failed to delete role:', error);
    return { success: false, error: error instanceof Error ? error.message : '역할 삭제 실패' };
  }
}

/**
 * 역할 통계 조회
 */
export async function fetchRoleStats(): Promise<ApiResponse<RoleStats>> {
  try {
    const { response, error } = await serverFetch(`${API_URL}/api/v1/roles/stats`, { method: 'GET' });

    if (error) {
      return { success: false, error: error.message };
    }

    if (!response) {
      return { success: false, error: '역할 통계 조회에 실패했습니다.' };
    }

    const result = await response.json();

    if (!response.ok || !result.success) {
      return { success: false, error: result.message || '역할 통계 조회 실패' };
    }

    return { success: true, data: result.data };
  } catch (error) {
    if (isRedirectError(error)) throw error;
    console.error('Failed to fetch role stats:', error);
    return { success: false, error: error instanceof Error ? error.message : '역할 통계 조회 실패' };
  }
}

/**
 * 활성 역할 목록 (드롭다운용)
 */
export async function fetchActiveRoles(): Promise<ApiResponse<Role[]>> {
  try {
    const { response, error } = await serverFetch(`${API_URL}/api/v1/roles/active`, { method: 'GET' });

    if (error) {
      return { success: false, error: error.message };
    }

    if (!response) {
      return { success: false, error: '활성 역할 목록 조회에 실패했습니다.' };
    }

    const result = await response.json();

    if (!response.ok || !result.success) {
      return { success: false, error: result.message || '활성 역할 목록 조회 실패' };
    }

    return { success: true, data: result.data };
  } catch (error) {
    if (isRedirectError(error)) throw error;
    console.error('Failed to fetch active roles:', error);
    return { success: false, error: error instanceof Error ? error.message : '활성 역할 목록 조회 실패' };
  }
}

// ========== Permission Matrix ==========

/**
 * 권한 매트릭스용 메뉴 트리 조회
 */
export async function fetchPermissionMenus(): Promise<ApiResponse<{
  menus: MenuTreeItem[];
  permission_types: string[];
}>> {
  try {
    const { response, error } = await serverFetch(`${API_URL}/api/v1/role-permissions/menus`, { method: 'GET' });

    if (error) {
      return { success: false, error: error.message };
    }

    if (!response) {
      return { success: false, error: '메뉴 트리 조회에 실패했습니다.' };
    }

    const result = await response.json();

    if (!response.ok || !result.success) {
      return { success: false, error: result.message || '메뉴 트리 조회 실패' };
    }

    return { success: true, data: result.data };
  } catch (error) {
    if (isRedirectError(error)) throw error;
    console.error('Failed to fetch permission menus:', error);
    return { success: false, error: error instanceof Error ? error.message : '메뉴 트리 조회 실패' };
  }
}

/**
 * 역할의 권한 매트릭스 조회
 */
export async function fetchPermissionMatrix(roleId: number): Promise<ApiResponse<PermissionMatrix>> {
  try {
    const { response, error } = await serverFetch(`${API_URL}/api/v1/roles/${roleId}/permissions/matrix`, { method: 'GET' });

    if (error) {
      return { success: false, error: error.message };
    }

    if (!response) {
      return { success: false, error: '권한 매트릭스 조회에 실패했습니다.' };
    }

    const result = await response.json();

    if (!response.ok || !result.success) {
      return { success: false, error: result.message || '권한 매트릭스 조회 실패' };
    }

    return { success: true, data: result.data };
  } catch (error) {
    if (isRedirectError(error)) throw error;
    console.error('Failed to fetch permission matrix:', error);
    return { success: false, error: error instanceof Error ? error.message : '권한 매트릭스 조회 실패' };
  }
}

/**
 * 특정 메뉴의 특정 권한 토글
 */
export async function togglePermission(
  roleId: number,
  menuId: number,
  permissionType: string
): Promise<ApiResponse<{
  granted: boolean;
  propagated_to: number[];
}>> {
  try {
    const { response, error } = await serverFetch(`${API_URL}/api/v1/roles/${roleId}/permissions/toggle`, {
      method: 'POST',
      body: JSON.stringify({
        menu_id: menuId,
        permission_type: permissionType,
      }),
    });

    if (error) {
      return { success: false, error: error.message };
    }

    if (!response) {
      return { success: false, error: '권한 토글에 실패했습니다.' };
    }

    const result = await response.json();

    if (!response.ok || !result.success) {
      return { success: false, error: result.message || '권한 토글 실패' };
    }

    revalidatePath(`/settings/permissions/${roleId}`);
    return { success: true, data: result.data };
  } catch (error) {
    if (isRedirectError(error)) throw error;
    console.error('Failed to toggle permission:', error);
    return { success: false, error: error instanceof Error ? error.message : '권한 토글 실패' };
  }
}

/**
 * 모든 권한 허용
 */
export async function allowAllPermissions(roleId: number): Promise<ApiResponse<{ count: number }>> {
  try {
    const { response, error } = await serverFetch(`${API_URL}/api/v1/roles/${roleId}/permissions/allow-all`, {
      method: 'POST',
    });

    if (error) {
      return { success: false, error: error.message };
    }

    if (!response) {
      return { success: false, error: '전체 허용에 실패했습니다.' };
    }

    const result = await response.json();

    if (!response.ok || !result.success) {
      return { success: false, error: result.message || '전체 허용 실패' };
    }

    revalidatePath(`/settings/permissions/${roleId}`);
    return { success: true, data: result.data };
  } catch (error) {
    if (isRedirectError(error)) throw error;
    console.error('Failed to allow all permissions:', error);
    return { success: false, error: error instanceof Error ? error.message : '전체 허용 실패' };
  }
}

/**
 * 모든 권한 거부
 */
export async function denyAllPermissions(roleId: number): Promise<ApiResponse<{ count: number }>> {
  try {
    const { response, error } = await serverFetch(`${API_URL}/api/v1/roles/${roleId}/permissions/deny-all`, {
      method: 'POST',
    });

    if (error) {
      return { success: false, error: error.message };
    }

    if (!response) {
      return { success: false, error: '전체 거부에 실패했습니다.' };
    }

    const result = await response.json();

    if (!response.ok || !result.success) {
      return { success: false, error: result.message || '전체 거부 실패' };
    }

    revalidatePath(`/settings/permissions/${roleId}`);
    return { success: true, data: result.data };
  } catch (error) {
    if (isRedirectError(error)) throw error;
    console.error('Failed to deny all permissions:', error);
    return { success: false, error: error instanceof Error ? error.message : '전체 거부 실패' };
  }
}

/**
 * 기본 권한으로 초기화 (view만 허용)
 */
export async function resetPermissions(roleId: number): Promise<ApiResponse<{ count: number }>> {
  try {
    const { response, error } = await serverFetch(`${API_URL}/api/v1/roles/${roleId}/permissions/reset`, {
      method: 'POST',
    });

    if (error) {
      return { success: false, error: error.message };
    }

    if (!response) {
      return { success: false, error: '권한 초기화에 실패했습니다.' };
    }

    const result = await response.json();

    if (!response.ok || !result.success) {
      return { success: false, error: result.message || '권한 초기화 실패' };
    }

    revalidatePath(`/settings/permissions/${roleId}`);
    return { success: true, data: result.data };
  } catch (error) {
    if (isRedirectError(error)) throw error;
    console.error('Failed to reset permissions:', error);
    return { success: false, error: error instanceof Error ? error.message : '권한 초기화 실패' };
  }
}