package com.saas.admin.controller;

import com.saas.admin.dto.request.CreateUserRequest;
import com.saas.admin.dto.request.UpdateUserRequest;
import com.saas.admin.dto.response.UserResponse;
import com.saas.admin.service.UserService;
import com.saas.shared.dto.common.ApiResponse;
import com.saas.shared.dto.common.PageResponse;
import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.tags.Tag;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController
@RequestMapping("/api/admin/users")
@RequiredArgsConstructor
@Slf4j
@Tag(name = "Admin User Management", description = "APIs for managing users")
@PreAuthorize("hasRole('SYSTEM_ADMIN')")
public class AdminUserController {

    private final UserService userService;

    @GetMapping
    @Operation(summary = "Get all users", description = "Retrieve a paginated list of all users")
    public ResponseEntity<ApiResponse<PageResponse<UserResponse>>> getUsers(
            @RequestParam(defaultValue = "0") int page,
            @RequestParam(defaultValue = "10") int size) {
        return ResponseEntity.ok(ApiResponse.success(userService.getUsers(page, size)));
    }

    @GetMapping("/all")
    @Operation(summary = "Get all users list", description = "Retrieve a list of all users without pagination")
    public ResponseEntity<ApiResponse<List<UserResponse>>> getAllUsers() {
        return ResponseEntity.ok(ApiResponse.success(userService.getAllUsers()));
    }

    @GetMapping("/{id}")
    @Operation(summary = "Get user by ID", description = "Retrieve a specific user by ID")
    public ResponseEntity<ApiResponse<UserResponse>> getUserById(@PathVariable Long id) {
        return ResponseEntity.ok(ApiResponse.success(userService.getUserById(id)));
    }

    @PostMapping
    @Operation(summary = "Create user", description = "Create a new user")
    public ResponseEntity<ApiResponse<UserResponse>> createUser(@RequestBody CreateUserRequest request) {
        return ResponseEntity.status(HttpStatus.CREATED)
                .body(ApiResponse.success(userService.createUser(request), "User created successfully"));
    }

    @PutMapping("/{id}")
    @Operation(summary = "Update user", description = "Update an existing user")
    public ResponseEntity<ApiResponse<UserResponse>> updateUser(
            @PathVariable Long id,
            @RequestBody UpdateUserRequest request) {
        return ResponseEntity.ok(ApiResponse.success(userService.updateUser(id, request), "User updated successfully"));
    }

    @DeleteMapping("/{id}")
    @Operation(summary = "Delete user", description = "Delete a user by ID")
    public ResponseEntity<ApiResponse<Void>> deleteUser(@PathVariable Long id) {
        userService.deleteUser(id);
        return ResponseEntity.ok(ApiResponse.success(null, "User deleted successfully"));
    }
}