package handler

import (
	"net/http"
	"strconv"

	"github.com/gin-gonic/gin"
	"github.com/gouki/lunar-server/internal/config"
	"github.com/gouki/lunar-server/internal/model"
	"github.com/gouki/lunar-server/internal/service"
)

// WikiSync 维基百科同步服务实例（main 中注入）
var WikiSync *service.WikiSyncService

// BaikeTermSync 节气详情同步服务实例（main 中注入，独立于维基同步）
var BaikeTermSync *service.BaikeTermSyncService

// ===== 公开接口（小程序） =====

// GetWikiEntries 百科条目列表（小程序百科页）
func GetWikiEntries(c *gin.Context) {
	wikiService := service.NewWikiService()
	entries, err := wikiService.ListEntries(c.Query("category"), c.Query("keyword"), 1)
	if err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{
			"code": 500,
			"msg":  "获取百科条目失败",
		})
		return
	}

	c.JSON(http.StatusOK, gin.H{
		"code": 0,
		"msg":  "success",
		"data": gin.H{
			"list": entries,
		},
	})
}

// GetOnThisDay 历史上的今天（含大事记/出生/逝世/节假日）
func GetOnThisDay(c *gin.Context) {
	month, _ := strconv.Atoi(c.Query("month"))
	day, _ := strconv.Atoi(c.Query("day"))

	wikiService := service.NewWikiService()
	result, err := wikiService.GetOnThisDay(month, day)
	if err != nil {
		c.JSON(http.StatusBadRequest, gin.H{
			"code": 400,
			"msg":  err.Error(),
		})
		return
	}

	c.JSON(http.StatusOK, gin.H{
		"code": 0,
		"msg":  "success",
		"data": result,
	})
}

// ===== 管理后台接口 =====

// AdminWikiEntries 百科条目列表（含隐藏条目）
func AdminWikiEntries(c *gin.Context) {
	wikiService := service.NewWikiService()
	entries, err := wikiService.ListEntries(c.Query("category"), c.Query("keyword"), -1)
	if err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"code": 500, "msg": "获取百科条目失败"})
		return
	}
	c.JSON(http.StatusOK, gin.H{
		"code": 0,
		"msg":  "success",
		"data": gin.H{"list": entries},
	})
}

// AdminWikiEntryCreate 新增百科条目
func AdminWikiEntryCreate(c *gin.Context) {
	var entry model.WikiEntry
	if err := c.ShouldBindJSON(&entry); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "msg": "参数错误"})
		return
	}

	wikiService := service.NewWikiService()
	if err := wikiService.CreateEntry(&entry); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "msg": err.Error()})
		return
	}
	c.JSON(http.StatusOK, gin.H{
		"code": 0,
		"msg":  "success",
		"data": entry,
	})
}

// AdminWikiEntryUpdate 更新百科条目
func AdminWikiEntryUpdate(c *gin.Context) {
	id, err := strconv.ParseUint(c.Param("id"), 10, 64)
	if err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "msg": "无效的ID"})
		return
	}

	var entry model.WikiEntry
	if err := c.ShouldBindJSON(&entry); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "msg": "参数错误"})
		return
	}

	wikiService := service.NewWikiService()
	if err := wikiService.UpdateEntry(uint(id), &entry); err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"code": 500, "msg": "更新失败"})
		return
	}
	c.JSON(http.StatusOK, gin.H{"code": 0, "msg": "success"})
}

// AdminWikiEntryDelete 删除百科条目
func AdminWikiEntryDelete(c *gin.Context) {
	id, err := strconv.ParseUint(c.Param("id"), 10, 64)
	if err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "msg": "无效的ID"})
		return
	}

	wikiService := service.NewWikiService()
	if err := wikiService.DeleteEntry(uint(id)); err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"code": 500, "msg": "删除失败"})
		return
	}
	c.JSON(http.StatusOK, gin.H{"code": 0, "msg": "success"})
}

// AdminWikiSyncStatus 维基百科同步状态
func AdminWikiSyncStatus(c *gin.Context) {
	wikiService := service.NewWikiService()
	status, err := wikiService.GetSyncStatus(WikiSync != nil && WikiSync.IsRunning())
	if err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"code": 500, "msg": "获取同步状态失败"})
		return
	}
	c.JSON(http.StatusOK, gin.H{
		"code": 0,
		"msg":  "success",
		"data": status,
	})
}

// AdminWikiSyncTrigger 手动触发全量同步（异步执行）
func AdminWikiSyncTrigger(c *gin.Context) {
	if WikiSync == nil {
		c.JSON(http.StatusServiceUnavailable, gin.H{"code": 503, "msg": "同步服务未初始化"})
		return
	}
	if !WikiSync.TriggerSync("admin", true) {
		c.JSON(http.StatusConflict, gin.H{"code": 409, "msg": "已有同步任务正在执行，请稍后再试"})
		return
	}
	c.JSON(http.StatusOK, gin.H{"code": 0, "msg": "同步任务已启动"})
}

// ===== 节气详情同步（百度百科，独立于维基） =====

// AdminTermSyncStatus 节气详情同步状态（X/24 已含详情 + 最近一次同步日志）
func AdminTermSyncStatus(c *gin.Context) {
	db := config.GetDB()
	var detailed int64
	db.Model(&model.WikiEntry{}).Where("category = ? AND image != ''", "term").Count(&detailed)

	var lastLog model.BaikeTermSyncLog
	db.Order("started_at DESC").First(&lastLog)

	c.JSON(http.StatusOK, gin.H{
		"code": 0,
		"msg":  "success",
		"data": gin.H{
			"running":        BaikeTermSync != nil && BaikeTermSync.IsRunning(),
			"detailedTerms":  detailed,
			"totalTerms":     24,
			"lastSync":       lastLog,
		},
	})
}

// AdminTermSyncTrigger 手动触发节气详情同步（异步执行）
func AdminTermSyncTrigger(c *gin.Context) {
	if BaikeTermSync == nil {
		c.JSON(http.StatusServiceUnavailable, gin.H{"code": 503, "msg": "节气同步服务未初始化"})
		return
	}
	if !BaikeTermSync.TriggerSync("admin", true) {
		c.JSON(http.StatusConflict, gin.H{"code": 409, "msg": "已有节气同步任务正在执行，请稍后再试"})
		return
	}
	c.JSON(http.StatusOK, gin.H{"code": 0, "msg": "节气同步任务已启动"})
}