// internal/handlers/note_link.go

package bookmarks

import (
	"net/http"

	api "git.zzyxyz.com/zzy/zzyxyz_go_api/gen/bookmarks_server"
	"git.zzyxyz.com/zzy/zzyxyz_go_api/internal/bookmarks/models"
	"github.com/gin-gonic/gin"
	_ "github.com/mattn/go-sqlite3"
	"gorm.io/driver/sqlite"
	"gorm.io/gorm"
)

type BookMarksImpl struct {
	db *gorm.DB
}

var adminToken *string

func validateApiKey(apiKey string) bool {
	if adminToken != nil && apiKey == *adminToken {
		return true
	}

	return false
}

func AuthMiddleware() api.MiddlewareFunc {
	return func(c *gin.Context) {
		// 检查当前请求是否需要认证
		if _, exists := c.Get(api.ApiKeyAuthScopes); exists {
			// 提取 API Key
			apiKey := c.GetHeader("X-BookMark-Token")

			// 验证 API Key（您需要实现这个逻辑）
			if apiKey == "" || !validateApiKey(apiKey) {
				c.JSON(http.StatusUnauthorized, api.Error{
					Errtype: "Unauthorized",
					Message: "Invalid or missing API key",
				})
				c.Abort()
				return
			}
		}
		c.Next()
	}
}

func NewBookMarkPermission() (*api.GinServerOptions, error) {
	return &api.GinServerOptions{
		Middlewares: []api.MiddlewareFunc{AuthMiddleware()},
	}, nil
}

func NewBookMarks(dbPath string) (*BookMarksImpl, error) {
	var err error
	var db *gorm.DB
	db, err = gorm.Open(sqlite.Open(dbPath), &gorm.Config{})
	if err != nil {
		return nil, err
	}

	// 自动迁移表结构
	err = db.AutoMigrate(&models.Bookmark{})
	if err != nil {
		return nil, err
	}
	return &BookMarksImpl{db: db}, nil
}

func (b *BookMarksImpl) FindBMFromExternalID(externalID int64) (models.Bookmark, error) {
	var db = b.db
	var bookmark models.Bookmark

	// 使用ExternalID查询书签
	if err := db.Where("external_id = ?", externalID).First(&bookmark).Error; err != nil {
		return bookmark, err
	}

	return bookmark, nil
}

// CreateBookmark implements api.ServerInterface.
func (b *BookMarksImpl) CreateBookmark(c *gin.Context, id int64) {
	var db = b.db
	var req api.BookmarkRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, api.Error{
			Errtype: "ParameterError",
			Message: "Invalid request parameters",
		})
		return
	}

	// 检查外部ID是否已经存在
	var existingBookmark models.Bookmark
	result := db.Where("external_id = ?", id).First(&existingBookmark)
	if result.Error == nil {
		// ExternalID已存在，返回冲突错误
		c.JSON(http.StatusConflict, api.Error{
			Errtype: "ConflictError",
			Message: "Bookmark with this External ID already exists",
		})
		return
	} else if result.Error != gorm.ErrRecordNotFound {
		// 数据库查询出错
		c.JSON(http.StatusInternalServerError, api.Error{
			Errtype: "DatabaseError",
			Message: "Database query error",
		})
		return
	}

	bookmark := bookmarkReq2Model(req)
	bookmark.ExternalID = id // 设置外部ID
	if err := db.Create(&bookmark).Error; err != nil {
		c.JSON(http.StatusInternalServerError, api.Error{
			Errtype: "DatabaseError",
			Message: "Failed to create bookmark",
		})
		return
	}

	response := bookmarkModel2Res(bookmark)
	c.JSON(http.StatusCreated, response)
}

// DeleteBookmark implements api.ServerInterface.
func (b *BookMarksImpl) DeleteBookmark(c *gin.Context, id int64) {
	var db = b.db
	var bookmark models.Bookmark

	// 使用ExternalID删除书签
	if err := db.Where("external_id = ?", id).Delete(&bookmark).Error; err != nil {
		c.JSON(http.StatusInternalServerError, api.Error{
			Errtype: "DatabaseError",
			Message: "Failed to delete bookmark",
		})
		return
	}

	c.Status(http.StatusNoContent)
}

// GetBookmark implements api.ServerInterface.
func (b *BookMarksImpl) GetBookmark(c *gin.Context, id int64) {
	var db = b.db
	var bookmark models.Bookmark

	// 使用ExternalID查询书签
	if err := db.Where("external_id = ?", id).First(&bookmark).Error; err != nil {
		c.JSON(http.StatusNotFound, api.Error{
			Errtype: "NotFoundError",
			Message: "Bookmark not found",
		})
		return
	}

	// 构造响应
	response := bookmarkModel2Res(bookmark)
	c.JSON(http.StatusOK, response)
}

// UpdateBookmark implements api.ServerInterface.
func (b *BookMarksImpl) UpdateBookmark(c *gin.Context, id int64) {
	var db = b.db
	var req api.BookmarkRequest

	// 绑定请求参数
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, api.Error{
			Errtype: "ParameterError",
			Message: "Invalid request parameters",
		})
		return
	}

	// 查找要更新的书签（使用ExternalID）
	var bookmark models.Bookmark
	if err := db.Where("external_id = ?", id).First(&bookmark).Error; err != nil {
		c.JSON(http.StatusNotFound, api.Error{
			Errtype: "NotFoundError",
			Message: "Bookmark not found",
		})
		return
	}

	// 更新书签字段
	if req.Name != "" {
		bookmark.Name = req.Name
	}
	if req.Link != nil {
		bookmark.Link = req.Link
	}
	if req.Detail != nil {
		bookmark.Detail = req.Detail
	}
	if req.Description != nil {
		bookmark.Description = req.Description
	}

	// 保存更新
	if err := db.Save(&bookmark).Error; err != nil {
		c.JSON(http.StatusInternalServerError, api.Error{
			Errtype: "DatabaseError",
			Message: "Failed to update bookmark",
		})
		return
	}

	// 构造响应
	response := bookmarkModel2Res(bookmark)
	c.JSON(http.StatusOK, response)
}

func bookmarkReq2Model(req api.BookmarkRequest) models.Bookmark {
	return models.Bookmark{
		Name:        req.Name,
		Link:        req.Link,
		Detail:      req.Detail,
		Description: req.Description,
	}
}

func bookmarkModel2Res(bookmark models.Bookmark) api.BookmarkResponse {
	return api.BookmarkResponse{
		Id:          bookmark.ID,
		Name:        bookmark.Name,
		Link:        bookmark.Link,
		Detail:      bookmark.Detail,
		Description: bookmark.Description,
		CreatedAt:   bookmark.CreatedAt,
	}
}

// Make sure we conform to ServerInterface
var _ api.ServerInterface = (*BookMarksImpl)(nil)