package main

import (
	"log"
	"net/http"
	"time"

	"github.com/gin-gonic/gin"
	"github.com/gin-contrib/cors"
)

func main() {
	// 创建 Gin 引擎
	r := gin.Default()

	// 配置 CORS
	r.Use(cors.New(cors.Config{
		AllowOrigins:     []string{"http://localhost:3000", "http://localhost:3002", "http://localhost:3003"},
		AllowMethods:     []string{"GET", "POST", "PUT", "DELETE", "OPTIONS"},
		AllowHeaders:     []string{"Origin", "Content-Type", "Authorization"},
		AllowCredentials: true,
		MaxAge:           12 * time.Hour,
	}))

	// 健康检查
	r.GET("/health", func(c *gin.Context) {
		c.JSON(http.StatusOK, gin.H{
			"status":    "ok",
			"timestamp": time.Now().Unix(),
			"version":   "1.0.0",
		})
	})

	// 模拟登录接口
	r.POST("/api/v1/auth/login", func(c *gin.Context) {
		var req struct {
			Username string `json:"username"`
			Password string `json:"password"`
		}
		
		if err := c.ShouldBindJSON(&req); err != nil {
			c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
			return
		}
		
		// 简单验证
		if req.Username == "admin" && req.Password == "admin123" {
			c.JSON(http.StatusOK, gin.H{
				"user": gin.H{
					"id":       "1",
					"username": "admin",
					"email":    "admin@example.com",
					"role":     "admin",
					"isActive": true,
				},
				"access_token": "mock-jwt-token",
				"expires_in":   86400,
			})
		} else {
			c.JSON(http.StatusUnauthorized, gin.H{"error": "Invalid credentials"})
		}
	})

	// 模拟照片列表接口
	r.GET("/api/v1/photos", func(c *gin.Context) {
		c.JSON(http.StatusOK, gin.H{
			"data": []gin.H{
				{
					"id":          "1",
					"title":       "Sample Photo 1",
					"description": "This is a sample photo",
					"url":         "https://picsum.photos/800/600?random=1",
					"status":      "published",
					"createdAt":   time.Now().Format(time.RFC3339),
				},
				{
					"id":          "2",
					"title":       "Sample Photo 2",
					"description": "This is another sample photo",
					"url":         "https://picsum.photos/800/600?random=2",
					"status":      "published",
					"createdAt":   time.Now().Format(time.RFC3339),
				},
			},
			"total":      2,
			"page":       1,
			"limit":      10,
			"totalPages": 1,
		})
	})

	// 模拟仪表板统计接口
	r.GET("/api/v1/dashboard/stats", func(c *gin.Context) {
		c.JSON(http.StatusOK, gin.H{
			"photos": gin.H{
				"total":     156,
				"thisMonth": 23,
				"today":     5,
			},
			"categories": gin.H{
				"total":  12,
				"active": 10,
			},
			"tags": gin.H{
				"total": 45,
			},
			"users": gin.H{
				"total":  8,
				"active": 7,
			},
		})
	})

	// 模拟分类列表接口
	r.GET("/api/v1/categories", func(c *gin.Context) {
		c.JSON(http.StatusOK, gin.H{
			"data": []gin.H{
				{
					"id":          "1",
					"name":        "风景",
					"slug":        "landscape",
					"description": "自然风景摄影",
					"photoCount":  25,
					"isActive":    true,
				},
				{
					"id":          "2",
					"name":        "人像",
					"slug":        "portrait",
					"description": "人物肖像摄影",
					"photoCount":  18,
					"isActive":    true,
				},
			},
			"total": 2,
		})
	})

	// 模拟标签列表接口
	r.GET("/api/v1/tags", func(c *gin.Context) {
		c.JSON(http.StatusOK, gin.H{
			"data": []gin.H{
				{
					"id":         "1",
					"name":       "日落",
					"slug":       "sunset",
					"photoCount": 12,
				},
				{
					"id":         "2",
					"name":       "城市",
					"slug":       "city",
					"photoCount": 8,
				},
			},
			"total": 2,
		})
	})

	// 模拟用户列表接口
	r.GET("/api/v1/users", func(c *gin.Context) {
		c.JSON(http.StatusOK, gin.H{
			"data": []gin.H{
				{
					"id":       "1",
					"username": "admin",
					"email":    "admin@example.com",
					"role":     "admin",
					"isActive": true,
				},
				{
					"id":       "2",
					"username": "editor",
					"email":    "editor@example.com",
					"role":     "editor",
					"isActive": true,
				},
			},
			"total": 2,
		})
	})

	// 启动服务器
	log.Println("🚀 Simple backend server starting on :8080")
	log.Fatal(r.Run(":8080"))
}