package handler

import (
	"encoding/json"
	"net/http"
	"strings"
	"time"

	"soul-api/internal/database"
	"soul-api/internal/model"

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

const ctxOpenPlatformApiKeyID = "openPlatformApiKeyID"

// OpenPlatformAuthMiddleware 开放平台：Authorization: Bearer op_sk_... 或 X-API-Key
func OpenPlatformAuthMiddleware() gin.HandlerFunc {
	return func(c *gin.Context) {
		secret := extractOpenPlatformSecretFromRequest(c)
		if secret == "" {
			c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{
				"success": false,
				"error":   "缺少 API Key（Authorization: Bearer op_sk_... 或 Header X-API-Key）",
			})
			return
		}
		db := database.DB()
		row, ok := OpenPlatformVerifySecret(db, secret)
		if !ok || row == nil {
			c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"success": false, "error": "API Key 无效或已吊销"})
			return
		}
		c.Set(ctxOpenPlatformApiKeyID, row.ID)
		c.Next()
	}
}

func maskPhoneForLog(p string) string {
	if len(p) < 8 {
		return "***"
	}
	return p[:3] + "****" + p[len(p)-4:]
}

func extractOpenPlatformSecretFromRequest(c *gin.Context) string {
	auth := strings.TrimSpace(c.GetHeader("Authorization"))
	if len(auth) > 7 && strings.EqualFold(auth[:7], "Bearer ") {
		return strings.TrimSpace(auth[7:])
	}
	if x := strings.TrimSpace(c.GetHeader("X-API-Key")); x != "" {
		return x
	}
	return ""
}

// OpenPlatformPatchUserProfile POST /api/open/user/profile
// Body: { "phone": "必填", "mbti"?: "...", "disc"?: "...", "pdp"?: "..." } — 仅更新传入的字段，至少传 mbti/disc/pdp 之一
func OpenPlatformPatchUserProfile(c *gin.Context) {
	var body struct {
		Phone string  `json:"phone"`
		Mbti  *string `json:"mbti"`
		Disc  *string `json:"disc"`
		Pdp   *string `json:"pdp"`
	}
	if err := c.ShouldBindJSON(&body); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"success": false, "error": "JSON 格式错误"})
		return
	}
	phone := strings.TrimSpace(strings.ReplaceAll(body.Phone, " ", ""))
	if phone == "" {
		c.JSON(http.StatusBadRequest, gin.H{"success": false, "error": "phone 不能为空"})
		return
	}
	if body.Mbti == nil && body.Disc == nil && body.Pdp == nil {
		c.JSON(http.StatusBadRequest, gin.H{"success": false, "error": "请至少提供 mbti、disc、pdp 之一"})
		return
	}

	db := database.DB()
	var user model.User
	if err := db.Where("phone = ? AND deleted_at IS NULL", phone).First(&user).Error; err != nil {
		c.JSON(http.StatusOK, gin.H{"success": false, "error": "未找到该手机号对应的用户"})
		return
	}

	updates := make(map[string]interface{})
	if body.Mbti != nil {
		v := strings.TrimSpace(*body.Mbti)
		updates["mbti"] = v
	}
	if body.Disc != nil {
		v := strings.TrimSpace(*body.Disc)
		updates["disc"] = v
	}
	if body.Pdp != nil {
		v := strings.TrimSpace(*body.Pdp)
		updates["pdp"] = v
	}
	if len(updates) == 0 {
		c.JSON(http.StatusBadRequest, gin.H{"success": false, "error": "没有需要更新的字段"})
		return
	}
	updates["updated_at"] = time.Now()
	t0 := time.Now()
	if err := db.Model(&model.User{}).Where("id = ?", user.ID).Updates(updates).Error; err != nil {
		c.JSON(http.StatusOK, gin.H{"success": false, "error": err.Error()})
		return
	}

	var keyID uint
	var keyPrefix string
	if v, ok := c.Get(ctxOpenPlatformApiKeyID); ok {
		if id, ok := v.(uint); ok {
			keyID = id
			var k model.OpenPlatformApiKey
			if err := db.Select("key_prefix").First(&k, id).Error; err == nil {
				keyPrefix = k.KeyPrefix
			}
		}
	}
	reqSnap, _ := json.Marshal(gin.H{"phone": maskPhoneForLog(phone), "mbti": body.Mbti, "disc": body.Disc, "pdp": body.Pdp})
	respSnap, _ := json.Marshal(gin.H{"success": true, "userId": user.ID})
	_ = OpenPlatformInsertLog(db, &model.OpenPlatformApiLog{
		ApiKeyID:     keyID,
		KeyPrefix:    keyPrefix,
		Method:       c.Request.Method,
		Path:         c.Request.URL.Path,
		StatusCode:   200,
		ClientIP:     c.ClientIP(),
		DurationMs:   int(time.Since(t0).Milliseconds()),
		RequestBody:  string(reqSnap),
		ResponseBody: string(respSnap),
	})

	c.JSON(http.StatusOK, gin.H{
		"success": true,
		"data": gin.H{
			"userId": user.ID,
			"phone":  phone,
			"updated": gin.H{
				"mbti": body.Mbti != nil,
				"disc": body.Disc != nil,
				"pdp":  body.Pdp != nil,
			},
		},
	})
}