package sync

import (
	"context"
	"encoding/json"
	"fmt"
	"strconv"
	"strings"
	"sync"
	"time"

	consts "dataengine/consts/public"
	dao "dataengine/dao/copydata"
	taskDto "dataengine/model/dto/copydata"
	entity "dataengine/model/entity/dict"

	"gitea.redpowerfuture.com/red-future/common/db/gfdb"
	"github.com/sirupsen/logrus"
)

// syncRunningMap 防止同一个接口被并发执行同步
var syncRunningMap sync.Map

// SyncResult 同步结果
type SyncResult struct {
	TableName    string
	TotalPages   int
	TotalRows    int
	InsertedRows int
	Duration     string
}

// PrefetchConfig 预取配置
type PrefetchConfig struct {
	URL          string `json:"url"`
	Method       string `json:"method"`
	ResponsePath string `json:"response_path"`
	TargetParam  string `json:"target_param"`
	ValueField   string `json:"value_field"`
}

// RecursiveConfig 递归遍历配置（如钉钉部门树）
type RecursiveConfig struct {
	KeyField    string `json:"key_field"`
	TargetParam string `json:"target_param"`
}

// SyncByConfig 执行同步
func SyncByConfig(ctx context.Context, platformCode, interfaceCode string, isFullSync bool) (*SyncResult, error) {
	// 创建超时 context 防止单次同步卡死
	timeoutMin := GetSyncTimeout(ctx)
	timeoutCtx, cancel := context.WithTimeout(ctx, time.Duration(timeoutMin)*time.Minute)
	defer cancel()
	ctx = timeoutCtx

	// 内存锁：防止同一个接口被并发执行（两个调度周期重叠时跳过）
	lockKey := platformCode + "/" + interfaceCode
	if _, loaded := syncRunningMap.LoadOrStore(lockKey, true); loaded {
		logrus.Warnf("接口 [%s] 正在同步中，跳过重复请求", lockKey)
		return nil, fmt.Errorf("接口 [%s] 正在同步中，跳过", lockKey)
	}
	defer syncRunningMap.Delete(lockKey)

	start := time.Now()
	pm := &PlatformManager{}

	platform, ifaces, err := pm.GetPlatformWithInterfaces(ctx, platformCode)
	if err != nil {
		return nil, fmt.Errorf("读取平台配置失败: %w", err)
	}

	var iface *entity.ApiInterface
	for i := range ifaces {
		if ifaces[i].Code == interfaceCode {
			iface = &ifaces[i]
			break
		}
	}
	if iface == nil {
		return nil, fmt.Errorf("未找到接口 [%s]", interfaceCode)
	}
	if iface.TableDefinition == nil || len(iface.TableDefinition) == 0 {
		return nil, fmt.Errorf("接口 [%s] 未配置 table_definition", interfaceCode)
	}

	td, err := ParseTableDefinition(iface.TableDefinition)
	if err != nil {
		return nil, fmt.Errorf("解析表结构失败: %w", err)
	}
	if err := EnsureTable(ctx, td); err != nil {
		return nil, fmt.Errorf("建表失败: %w", err)
	}

	// 检查上次同步状态（在标记 running 之前检查）
	prevStatus := getSyncStatus(ctx, platformCode, interfaceCode)
	lastSyncTime := int64(0)
	if !isFullSync {
		lastSyncTime = getLastSyncTime(ctx, platformCode, interfaceCode)
	}
	if prevStatus == "running" {
		logrus.Warnf("检测到上次同步异常中断 [%s/%s]，将重新全量同步", platformCode, interfaceCode)
		lastSyncTime = 0
	}

	// 标记同步开始（保留 last_sync_time 不变，状态设为 running）
	markSyncRunning(ctx, platformCode, interfaceCode, lastSyncTime)

	api := NewApiClient(platform)
	defer api.Close()

	prefetch := parsePrefetchConfig(iface.RequestConfig)
	if prefetch != nil {
		return syncWithPrefetch(ctx, api, platform, iface, ifaces, td, prefetch, isFullSync, lastSyncTime, start)
	}
	recursive := parseRecursiveConfig(iface.RequestConfig)
	if recursive != nil {
		return syncRecursive(ctx, api, platform, iface, td, recursive, start)
	}
	return syncSingleAPI(ctx, api, platform, iface, td, isFullSync, lastSyncTime, start)
}

// paramsInQuery 判断参数是否应放在 URL 查询字符串中
func paramsInQuery(iface *entity.ApiInterface) bool {
	if iface.Method == "GET" {
		return true
	}
	if iface.RequestConfig != nil {
		if loc, _ := iface.RequestConfig["parameters_location"].(string); loc == "query" {
			return true
		}
	}
	return false
}

// syncSingleAPI 单接口分页同步
func syncSingleAPI(ctx context.Context, api *ApiClient, platform *PlatformConfig, iface *entity.ApiInterface, td *TableDefinition, isFullSync bool, lastSyncTime int64, start time.Time) (*SyncResult, error) {
	pageSize := GetSyncPageSize(ctx)
	if ps, ok := iface.RequestConfig["page_size"].(float64); ok {
		pageSize = int(ps)
	} else if ps, ok := iface.RequestConfig["pageSize"].(float64); ok {
		pageSize = int(ps)
	}

	taskType := "incremental"
	if isFullSync || lastSyncTime <= 0 {
		taskType = "full"
	}

	inQuery := paramsInQuery(iface)
	method := string(iface.Method)

	// 游标分页首次请求需要处理初始游标值
	firstExtra := map[string]interface{}{}
	if isCursorPagination(iface) {
		cp := "cursor"
		if p, ok := iface.RequestConfig["page_param"].(string); ok && p != "" {
			cp = p
		}
		// 支持 initial_cursor 配置（如钉钉HRM首次传 0）
		if icv, ok := iface.RequestConfig["initial_cursor"]; ok {
			firstExtra[cp] = icv
		} else {
			firstExtra[cp] = ""
		}
	}
	body := buildReqBody(iface, 1, pageSize, lastSyncTime, firstExtra)
	resp, err := api.Request(ctx, method, iface.Url, body, inQuery)
	if err != nil {
		recordFailure(ctx, platform.PlatformCode, iface.Code, taskType, err.Error())
		return nil, fmt.Errorf("获取第一页失败: %w", err)
	}

	rows, totalPages, maxTime, nextCursor, err := parseRespExt(resp.Body, iface.ResponseConfig)
	if err != nil {
		recordFailure(ctx, platform.PlatformCode, iface.Code, taskType, fmt.Sprintf("解析第一页响应失败: %v", err))
		return nil, err
	}

	injectRowFields(rows, body, iface.RequestConfig)

	result := &SyncResult{TableName: td.TableName, TotalPages: totalPages}
	inserted, _ := savePage(ctx, td, rows)
	result.InsertedRows += inserted
	result.TotalRows += len(rows)

	// 游标分页
	if isCursorPagination(iface) {
		for nextCursor != "" && nextCursor != "nomore" {
			cp := "cursor"
			if p, ok := iface.RequestConfig["page_param"].(string); ok && p != "" {
				cp = p
			}
			body := buildReqBody(iface, 1, pageSize, lastSyncTime, map[string]interface{}{
				cp: nextCursor,
			})

			resp, err := api.Request(ctx, method, iface.Url, body, inQuery)
			if err != nil {
				logrus.Errorf("游标 %s 请求失败: %v", nextCursor, err)
				recordFailure(ctx, platform.PlatformCode, iface.Code, taskType, fmt.Sprintf("游标 %s 请求失败: %v", nextCursor, err))
				break
			}

			rows, _, mt, nc, pe := parseRespExt(resp.Body, iface.ResponseConfig)
			if pe != nil {
				logrus.Errorf("游标 %s 解析失败: %v", nextCursor, pe)
				recordFailure(ctx, platform.PlatformCode, iface.Code, taskType, fmt.Sprintf("游标 %s 解析失败: %v", nextCursor, pe))
				break
			}
			if len(rows) == 0 {
				break
			}
			nextCursor = nc

			injectRowFields(rows, body, iface.RequestConfig)
			inserted, _ = savePage(ctx, td, rows)
			result.InsertedRows += inserted
			result.TotalRows += len(rows)
			if mt > maxTime {
				maxTime = mt
			}
			result.TotalPages++
			time.Sleep(100 * time.Millisecond)
		}
	} else if iface.ResponseConfig != nil {
		// hasMore 分页（如钉钉 offset/size + hasMore）
		if hf, _ := iface.ResponseConfig["has_more_field"].(string); hf != "" {
			for page := 2; hasMoreCheck(resp.Body, hf); page++ {
				body := buildReqBody(iface, page, pageSize, lastSyncTime, nil)
				resp2, e2 := api.Request(ctx, method, iface.Url, body, inQuery)
				if e2 != nil {
					logrus.Errorf("第 %d 页请求失败: %v", page, e2)
					break
				}
				rows2, _, mt2, _, pe2 := parseRespExt(resp2.Body, iface.ResponseConfig)
				if pe2 != nil {
					logrus.Errorf("第 %d 页解析失败: %v", page, pe2)
					break
				}
				injectRowFields(rows2, body, iface.RequestConfig)
				inserted2, _ := savePage(ctx, td, rows2)
				result.InsertedRows += inserted2
				result.TotalRows += len(rows2)
				if mt2 > maxTime {
					maxTime = mt2
				}
				resp = resp2
				time.Sleep(100 * time.Millisecond)
			}
		} else {
			// 普通分页
			for page := 2; page <= totalPages; page++ {
				body := buildReqBody(iface, page, pageSize, lastSyncTime, nil)
				resp, err = api.Request(ctx, method, iface.Url, body, inQuery)
				if err != nil {
					logrus.Errorf("第 %d 页请求失败: %v", page, err)
					recordFailure(ctx, platform.PlatformCode, iface.Code, taskType, fmt.Sprintf("第 %d 页请求失败: %v", page, err))
					continue
				}
				rows, _, mt, _, pe := parseRespExt(resp.Body, iface.ResponseConfig)
				if pe != nil {
					logrus.Errorf("第 %d 页解析失败: %v", page, pe)
					recordFailure(ctx, platform.PlatformCode, iface.Code, taskType, fmt.Sprintf("第 %d 页解析失败: %v", page, pe))
					continue
				}
				injectRowFields(rows, body, iface.RequestConfig)
				inserted, _ = savePage(ctx, td, rows)
				result.InsertedRows += inserted
				result.TotalRows += len(rows)
				if mt > maxTime {
					maxTime = mt
				}
				time.Sleep(100 * time.Millisecond)
			}
		}
	} else {
		// 普通分页（无 response_config）
		for page := 2; page <= totalPages; page++ {
			body := buildReqBody(iface, page, pageSize, lastSyncTime, nil)
			resp, err = api.Request(ctx, method, iface.Url, body, inQuery)
			if err != nil {
				logrus.Errorf("第 %d 页请求失败: %v", page, err)
				continue
			}
			rows, _, mt, _, pe := parseRespExt(resp.Body, iface.ResponseConfig)
			if pe != nil {
				logrus.Errorf("第 %d 页解析失败: %v", page, pe)
				continue
			}
			injectRowFields(rows, body, iface.RequestConfig)
			inserted, _ = savePage(ctx, td, rows)
			result.InsertedRows += inserted
			result.TotalRows += len(rows)
			if mt > maxTime {
				maxTime = mt
			}
			time.Sleep(100 * time.Millisecond)
		}
	}

	if maxTime <= 0 {
		maxTime = time.Now().Unix()
	}
	updateSyncTime(ctx, platform.PlatformCode, iface.Code, maxTime)

	result.Duration = fmt.Sprintf("%.1fs", time.Since(start).Seconds())
	logrus.Infof("同步完成 - 表:%s, %d条, 写入%d条, 耗时%s", td.TableName, result.TotalRows, result.InsertedRows, result.Duration)
	return result, nil
}

func isCursorPagination(iface *entity.ApiInterface) bool {
	if iface.RequestConfig == nil {
		return false
	}
	cp, _ := iface.RequestConfig["cursor_pagination"].(bool)
	return cp
}

// hasMoreCheck 从响应体中提取 has_more_field 的值
func hasMoreCheck(raw []byte, hasMorePath string) bool {
	var respMap map[string]interface{}
	if err := json.Unmarshal(raw, &respMap); err != nil {
		return false
	}
	parts := strings.Split(hasMorePath, ".")
	cc := respMap
	for i, p := range parts {
		if i == len(parts)-1 {
			if b, ok := cc[p].(bool); ok {
				return b
			}
			if s, ok := cc[p].(string); ok {
				return s == "true"
			}
			return false
		}
		if m, ok := cc[p].(map[string]interface{}); ok {
			cc = m
		} else {
			return false
		}
	}
	return false
}

// collectPrefetchEntities 从 rows 中收集实体和行数据
func collectPrefetchEntities(rows []map[string]interface{}, prefetch *PrefetchConfig, allEntities *[]interface{}, allRows *[]map[string]interface{}) {
	for _, item := range rows {
		*allRows = append(*allRows, item)
		if prefetch.ValueField == "" {
			*allEntities = append(*allEntities, item)
		} else if v, ok := item[prefetch.ValueField]; ok {
			if f, ok := v.(float64); ok {
				*allEntities = append(*allEntities, int64(f))
			} else {
				*allEntities = append(*allEntities, v)
			}
		}
	}
}

// syncWithPrefetch 预取模式同步（先分页拉取全部实体列表，再并发处理每个实体）
func syncWithPrefetch(ctx context.Context, api *ApiClient, platform *PlatformConfig, iface *entity.ApiInterface, allIfaces []entity.ApiInterface, td *TableDefinition, prefetch *PrefetchConfig, isFullSync bool, lastSyncTime int64, start time.Time) (*SyncResult, error) {
	logrus.Infof("预取模式: %s -> %s", prefetch.URL, iface.Url)

	taskType := "incremental"
	if isFullSync || lastSyncTime <= 0 {
		taskType = "full"
	}

	// ====== 1. 预取阶段：分页拉取全部实体列表 ======
	prefetchIface := findInterfaceByURL(allIfaces, prefetch.URL)

	// 判断预取来源是否有递归配置（如钉钉部门树）
	var prefetchRecursiveCfg *RecursiveConfig
	if prefetchIface != nil {
		prefetchRecursiveCfg = parseRecursiveConfig(prefetchIface.RequestConfig)
	}

	// 判断预取来源是否游标分页，以及分页参数名
	prefetchIsCursor := false
	prefetchPageParam := "page"
	if prefetchIface != nil && prefetchIface.RequestConfig != nil {
		if cp, ok := prefetchIface.RequestConfig["cursor_pagination"].(bool); ok {
			prefetchIsCursor = cp
		}
		if p, ok := prefetchIface.RequestConfig["page_param"].(string); ok && p != "" {
			prefetchPageParam = p
		}
	}

	prefetchMethod := strings.ToUpper(prefetch.Method)
	prefetchPageSize := 100
	if prefetchIface != nil && prefetchIface.RequestConfig != nil {
		if ps, ok := prefetchIface.RequestConfig["pageSize"].(float64); ok {
			prefetchPageSize = int(ps)
		}
	}

	// 使用 prefetch 来源接口自己的配置判断参数位置
	var prefetchInQuery bool
	if prefetchIface != nil {
		prefetchInQuery = paramsInQuery(prefetchIface)
	} else {
		prefetchInQuery = paramsInQuery(iface)
	}

	// prefetch 来源接口的 response_config（用于正确解析列表路径）
	var prefetchRespCfg map[string]interface{}
	if prefetchIface != nil {
		prefetchRespCfg = prefetchIface.ResponseConfig
	}

	allEntities := make([]interface{}, 0)
	allRows := make([]map[string]interface{}, 0)

	prefetchReqIface := prefetchIface
	if prefetchReqIface == nil {
		prefetchReqIface = iface
	}

	if prefetchIface != nil && prefetchRecursiveCfg != nil {
		// ----- 递归遍历预取（如钉钉部门树）-----
		maxDepth := 20
		if md, ok := prefetchIface.RequestConfig["max_recursive_depth"].(float64); ok {
			maxDepth = int(md)
		}
		processedKeys := make(map[string]bool)
		type rItem struct {
			depth  int
			keyVal interface{}
		}
		queue := []rItem{{depth: 0, keyVal: nil}}

		for len(queue) > 0 {
			item := queue[0]
			queue = queue[1:]
			if item.depth > maxDepth {
				continue
			}
			if item.keyVal != nil {
				keyStr := fmt.Sprintf("%v", item.keyVal)
				if processedKeys[keyStr] {
					continue
				}
				processedKeys[keyStr] = true
			}
			extra := make(map[string]interface{})
			if item.keyVal != nil {
				extra[prefetchRecursiveCfg.TargetParam] = item.keyVal
			}
			body := buildReqBody(prefetchReqIface, 1, prefetchPageSize, 0, extra)
			r2, err := api.Request(ctx, prefetchMethod, prefetch.URL, body, prefetchInQuery)
			if err != nil {
				logrus.Errorf("预取递归 [depth=%d] 请求失败: %v", item.depth, err)
				continue
			}
			itemRows, _, _, _, pe := parseRespExt(r2.Body, prefetchRespCfg)
			if pe != nil {
				logrus.Errorf("预取递归 [depth=%d] 解析失败: %v", item.depth, pe)
				continue
			}
			for _, row := range itemRows {
				allRows = append(allRows, row)
				if prefetch.ValueField == "" {
					allEntities = append(allEntities, row)
				} else if v, ok := row[prefetch.ValueField]; ok {
					if f, ok := v.(float64); ok {
						allEntities = append(allEntities, int64(f))
					} else {
						allEntities = append(allEntities, v)
					}
				}
				if v, ok := row[prefetchRecursiveCfg.KeyField]; ok {
					queue = append(queue, rItem{depth: item.depth + 1, keyVal: v})
				}
			}
			time.Sleep(100 * time.Millisecond)
		}
	} else {
		// ----- 常规分页预取 -----
		firstExtra := make(map[string]interface{})
		if prefetchIsCursor {
			firstExtra[prefetchPageParam] = ""
		}
		body := buildReqBody(prefetchReqIface, 1, prefetchPageSize, lastSyncTime, firstExtra)
		resp, err := api.Request(ctx, prefetchMethod, prefetch.URL, body, prefetchInQuery)
		if err != nil {
			recordFailure(ctx, platform.PlatformCode, iface.Code, taskType, fmt.Sprintf("预取第一页请求失败: %v", err))
			return nil, fmt.Errorf("预取第一页失败: %w", err)
		}

		rows, prefetchTotalPages, _, nextCursor, err := parseRespExt(resp.Body, prefetchRespCfg)
		if err != nil {
			recordFailure(ctx, platform.PlatformCode, iface.Code, taskType, fmt.Sprintf("解析预取响应失败: %v", err))
			return nil, fmt.Errorf("解析预取响应失败: %w", err)
		}
		collectPrefetchEntities(rows, prefetch, &allEntities, &allRows)

		if prefetchIsCursor {
			for nextCursor != "" && nextCursor != "nomore" {
				body := buildReqBody(prefetchReqIface, 1, prefetchPageSize, lastSyncTime, map[string]interface{}{
					prefetchPageParam: nextCursor,
				})
				resp, err := api.Request(ctx, prefetchMethod, prefetch.URL, body, prefetchInQuery)
				if err != nil {
					logrus.Errorf("预取游标 %s 请求失败: %v", nextCursor, err)
					break
				}
				rows, _, _, nc, pe := parseRespExt(resp.Body, prefetchRespCfg)
				if pe != nil {
					logrus.Errorf("预取游标 %s 解析失败: %v", nextCursor, pe)
					break
				}
				if len(rows) == 0 {
					break
				}
				nextCursor = nc
				collectPrefetchEntities(rows, prefetch, &allEntities, &allRows)
				time.Sleep(100 * time.Millisecond)
			}
		} else {
			for page := 2; page <= prefetchTotalPages; page++ {
				body := buildReqBody(prefetchReqIface, page, prefetchPageSize, lastSyncTime, nil)
				resp, err := api.Request(ctx, prefetchMethod, prefetch.URL, body, prefetchInQuery)
				if err != nil {
					logrus.Errorf("预取第 %d 页请求失败: %v", page, err)
					continue
				}
				rows, _, _, _, pe := parseRespExt(resp.Body, prefetchRespCfg)
				if pe != nil {
					logrus.Errorf("预取第 %d 页解析失败: %v", page, pe)
					continue
				}
				collectPrefetchEntities(rows, prefetch, &allEntities, &allRows)
				time.Sleep(100 * time.Millisecond)
			}
		}
	}

	if len(allEntities) == 0 {
		logrus.Warn("预取结果为空列表，跳过同步")
		return &SyncResult{TableName: td.TableName, Duration: fmt.Sprintf("%.1fs", time.Since(start).Seconds())}, nil
	}
	logrus.Infof("预取到 %d 个实体", len(allEntities))

	// 将预取的数据也存入库（如账户列表存入 tencent_account_relation）
	if prefetchIface != nil && prefetchIface.TableDefinition != nil {
		prefetchTd, err := ParseTableDefinition(prefetchIface.TableDefinition)
		if err == nil {
			if ensureErr := EnsureTable(ctx, prefetchTd); ensureErr == nil {
				saved, _ := savePage(ctx, prefetchTd, allRows)
				logrus.Infof("预取数据已存库: %s, %d 条", prefetchTd.TableName, saved)
			}
		}
	}

	// 并发处理每个实体的数据
	result := &SyncResult{TableName: td.TableName}
	pageSize := GetSyncPageSize(ctx)
	if ps, ok := iface.RequestConfig["page_size"].(float64); ok {
		pageSize = int(ps)
	} else if ps, ok := iface.RequestConfig["pageSize"].(float64); ok {
		pageSize = int(ps)
	}

	dataMethod := string(iface.Method)
	inQuery := paramsInQuery(iface)
	concurrency := GetSyncConcurrency(ctx)

	var mu sync.Mutex
	var wg sync.WaitGroup
	sem := make(chan struct{}, concurrency)
	globalMaxTime := lastSyncTime

	for idx, entityVal := range allEntities {
		wg.Add(1)
		sem <- struct{}{}

		go func(idx int, val interface{}) {
			defer wg.Done()
			defer func() { <-sem }()

			logrus.Infof("  处理实体 [%d/%d]: %v", idx+1, len(allEntities), val)
			entityMaxTime := int64(0)

			if isCursorPagination(iface) {
				// ----- 游标分页（如钉钉 user_list）-----
				cp := "cursor"
				if p, ok := iface.RequestConfig["page_param"].(string); ok && p != "" {
					cp = p
				}
				firstExtra := map[string]interface{}{
					prefetch.TargetParam: val,
				}
				if icv, ok := iface.RequestConfig["initial_cursor"]; ok {
					firstExtra[cp] = icv
				} else {
					firstExtra[cp] = ""
				}
				body := buildReqBody(iface, 1, pageSize, lastSyncTime, firstExtra)
				resp, err := api.Request(ctx, dataMethod, iface.Url, body, inQuery)
				if err != nil {
					logrus.Errorf("  实体 %v 首次请求失败: %v", val, err)
					return
				}
				rows, _, mt, nc, pe := parseRespExt(resp.Body, iface.ResponseConfig)
				if pe != nil {
					logrus.Errorf("  实体 %v 解析首页失败: %v", val, pe)
					return
				}
				for i := range rows {
					rows[i][prefetch.TargetParam] = val
				}
				injectRowFields(rows, body, iface.RequestConfig)
				inserted, _ := savePage(ctx, td, rows)
				mu.Lock()
				result.InsertedRows += inserted
				result.TotalRows += len(rows)
				mu.Unlock()
				if mt > entityMaxTime {
					entityMaxTime = mt
				}
				nextCursor := nc
				for nextCursor != "" && nextCursor != "nomore" {
					body := buildReqBody(iface, 1, pageSize, lastSyncTime, map[string]interface{}{
						cp:                   nextCursor,
						prefetch.TargetParam: val,
					})
					resp, err := api.Request(ctx, dataMethod, iface.Url, body, inQuery)
					if err != nil {
						logrus.Errorf("  实体 %v 游标 %s 失败: %v", val, nextCursor, err)
						break
					}
					rows, _, mt, nc, pe := parseRespExt(resp.Body, iface.ResponseConfig)
					if pe != nil {
						logrus.Errorf("  实体 %v 游标 %s 解析失败: %v", val, nextCursor, pe)
						break
					}
					if len(rows) == 0 {
						break
					}
					nextCursor = nc
					for i := range rows {
						rows[i][prefetch.TargetParam] = val
					}
					injectRowFields(rows, body, iface.RequestConfig)
					inserted, _ := savePage(ctx, td, rows)
					mu.Lock()
					result.InsertedRows += inserted
					result.TotalRows += len(rows)
					mu.Unlock()
					if mt > entityMaxTime {
						entityMaxTime = mt
					}
					time.Sleep(100 * time.Millisecond)
				}
			} else {
				// ----- 普通分页 -----
				page := 1
				totalPages := 1
				for page <= totalPages {
					body := buildReqBody(iface, page, pageSize, lastSyncTime, map[string]interface{}{
						prefetch.TargetParam: val,
					})
					resp, err := api.Request(ctx, dataMethod, iface.Url, body, inQuery)
					if err != nil {
						logrus.Errorf("  实体 %v 第 %d 页失败: %v", val, page, err)
						page++
						time.Sleep(200 * time.Millisecond)
						continue
					}
					rows, tp, mt, parseErr := parseResp(resp.Body, iface.ResponseConfig)
					if parseErr != nil {
						logrus.Errorf("  解析响应失败: %v", parseErr)
						page++
						continue
					}
					if page == 1 {
						totalPages = tp
					}
					for i := range rows {
						rows[i][prefetch.TargetParam] = val
					}
					injectRowFields(rows, body, iface.RequestConfig)
					inserted, _ := savePage(ctx, td, rows)
					mu.Lock()
					result.InsertedRows += inserted
					result.TotalRows += len(rows)
					mu.Unlock()
					if mt > entityMaxTime {
						entityMaxTime = mt
					}
					page++
					time.Sleep(100 * time.Millisecond)
				}
			}

			if entityMaxTime > 0 {
				mu.Lock()
				if entityMaxTime > globalMaxTime {
					globalMaxTime = entityMaxTime
				}
				mu.Unlock()
			}
		}(idx, entityVal)
	}

	wg.Wait()

	if globalMaxTime <= 0 {
		globalMaxTime = time.Now().Unix()
	}
	updateSyncTime(ctx, platform.PlatformCode, iface.Code, globalMaxTime)

	result.Duration = fmt.Sprintf("%.1fs", time.Since(start).Seconds())
	logrus.Infof("同步完成 - 表:%s, %d条, 写入%d条, 耗时%s", td.TableName, result.TotalRows, result.InsertedRows, result.Duration)
	return result, nil
}

// syncRecursive 递归遍历同步（如钉钉部门树：先查根级 → 对每个子部门递归查下级）
func syncRecursive(ctx context.Context, api *ApiClient, platform *PlatformConfig, iface *entity.ApiInterface, td *TableDefinition, recursive *RecursiveConfig, start time.Time) (*SyncResult, error) {
	maxDepth := 20
	if md, ok := iface.RequestConfig["max_recursive_depth"].(float64); ok {
		maxDepth = int(md)
	}

	inQuery := paramsInQuery(iface)
	method := string(iface.Method)

	allRows := make([]map[string]interface{}, 0)
	processedKeys := make(map[string]bool)

	type queueItem struct {
		depth  int
		keyVal interface{} // nil 表示根级
	}
	queue := []queueItem{{depth: 0, keyVal: nil}}

	for len(queue) > 0 {
		item := queue[0]
		queue = queue[1:]

		if item.depth > maxDepth {
			logrus.Warnf("递归已达最大深度 %d，终止该分支", maxDepth)
			continue
		}

		// 防重复处理
		if item.keyVal != nil {
			keyStr := fmt.Sprintf("%v", item.keyVal)
			if processedKeys[keyStr] {
				continue
			}
			processedKeys[keyStr] = true
		}

		extraParams := make(map[string]interface{})
		if item.keyVal != nil {
			extraParams[recursive.TargetParam] = item.keyVal
		}

		body := buildReqBody(iface, 1, 100, 0, extraParams)
		resp, err := api.Request(ctx, method, iface.Url, body, inQuery)
		if err != nil {
			logrus.Errorf("递归 [depth=%d] 请求失败: %v", item.depth, err)
			recordFailure(ctx, platform.PlatformCode, iface.Code, "full", fmt.Sprintf("递归深度 %d 请求失败: %v", item.depth, err))
			continue
		}

		rows, _, _, _, err := parseRespExt(resp.Body, iface.ResponseConfig)
		if err != nil {
			logrus.Errorf("递归 [depth=%d] 解析失败: %v", item.depth, err)
			continue
		}

		for _, row := range rows {
			allRows = append(allRows, row)
			if v, ok := row[recursive.KeyField]; ok {
				queue = append(queue, queueItem{depth: item.depth + 1, keyVal: v})
			}
		}

		time.Sleep(100 * time.Millisecond)
	}

	if len(allRows) == 0 {
		logrus.Warn("递归结果为空，跳过入库")
		return &SyncResult{TableName: td.TableName, Duration: fmt.Sprintf("%.1fs", time.Since(start).Seconds())}, nil
	}

	inserted, _ := savePage(ctx, td, allRows)
	updateSyncTime(ctx, platform.PlatformCode, iface.Code, time.Now().Unix())

	result := &SyncResult{
		TableName:    td.TableName,
		TotalRows:    len(allRows),
		InsertedRows: inserted,
		Duration:     fmt.Sprintf("%.1fs", time.Since(start).Seconds()),
	}
	logrus.Infof("递归同步完成 - 表:%s, %d条, 写入%d条, 耗时%s", td.TableName, result.TotalRows, result.InsertedRows, result.Duration)
	return result, nil
}

// getTotalPages 从响应中提取总页数
func getTotalPages(raw []byte) int {
	rows, tp, _, _, err := parseRespExt(raw, nil)
	if err != nil || len(rows) == 0 {
		return 0
	}
	return tp
}

func toFloat64(v interface{}) (float64, bool) {
	switch val := v.(type) {
	case float64:
		return val, true
	case int:
		return float64(val), true
	case int64:
		return float64(val), true
	case string:
		// 支持字符串类型的成功值（如钉钉智能薪酬返回 code: "200"）
		if f, err := strconv.ParseFloat(val, 64); err == nil {
			return f, true
		}
		return 0, false
	default:
		return 0, false
	}
}

// buildPrefetchParams 构建预取接口的请求参数
func buildPrefetchParams(iface *entity.ApiInterface) map[string]interface{} {
	params := make(map[string]interface{})

	if iface.RequestConfig != nil {
		pageParam := "page"
		psParam := "page_size"
		if p, ok := iface.RequestConfig["page_param"].(string); ok {
			pageParam = p
		}
		if p, ok := iface.RequestConfig["page_size_param"].(string); ok {
			psParam = p
		}
		params[pageParam] = 1
		params[psParam] = 100

		for k, v := range iface.RequestConfig {
			if k == "headers" || k == "prefetch" || k == "page_param" ||
				k == "page_size_param" || k == "time_field" || k == "parameters_location" ||
				k == "filtering" || k == "group_by" || k == "date_range" ||
				k == "body_wrapper_field" || k == "exclude_from_wrapper" ||
				k == "cursor_pagination" || k == "time_field_mode" ||
				k == "recursive" || k == "max_recursive_depth" ||
				k == "initial_cursor" || k == "pagination_mode" ||
				k == "full_sync_start_time" || k == "row_inject" {
				continue
			}
			if k == pageParam || k == psParam {
				continue
			}
			params[k] = v
		}
	}

	return params
}

// parsePrefetchConfig 解析预取配置
func parsePrefetchConfig(requestConfig map[string]interface{}) *PrefetchConfig {
	if requestConfig == nil {
		return nil
	}
	raw, ok := requestConfig["prefetch"]
	if !ok || raw == nil {
		return nil
	}
	m, ok := raw.(map[string]interface{})
	if !ok {
		return nil
	}
	pc := &PrefetchConfig{}
	if u, _ := m["url"].(string); u != "" {
		pc.URL = u
	} else {
		return nil
	}
	if method, _ := m["method"].(string); method != "" {
		pc.Method = method
	} else {
		pc.Method = "GET"
	}
	pc.ResponsePath, _ = m["response_path"].(string)
	pc.TargetParam, _ = m["target_param"].(string)
	pc.ValueField, _ = m["value_field"].(string)
	return pc
}

// parseRecursiveConfig 解析递归遍历配置
func parseRecursiveConfig(requestConfig map[string]interface{}) *RecursiveConfig {
	if requestConfig == nil {
		return nil
	}
	raw, ok := requestConfig["recursive"]
	if !ok || raw == nil {
		return nil
	}
	m, ok := raw.(map[string]interface{})
	if !ok {
		return nil
	}
	rc := &RecursiveConfig{}
	if kf, _ := m["key_field"].(string); kf != "" {
		rc.KeyField = kf
	} else {
		return nil
	}
	if tp, _ := m["target_param"].(string); tp != "" {
		rc.TargetParam = tp
	} else {
		return nil
	}
	return rc
}

// extractValues 从 JSON 响应中提取值列表
func extractValues(raw []byte, path, valueField string) ([]interface{}, error) {
	var resp map[string]interface{}
	if err := json.Unmarshal(raw, &resp); err != nil {
		return nil, fmt.Errorf("JSON解析失败: %w", err)
	}

	parts := strings.Split(path, ".")
	current := resp
	for i, part := range parts {
		if i == len(parts)-1 {
			list, ok := current[part].([]interface{})
			if !ok {
				return nil, fmt.Errorf("路径 %s 不是数组", path)
			}
			var values []interface{}
			for _, item := range list {
				if valueField == "" {
					values = append(values, item)
				} else if m, ok := item.(map[string]interface{}); ok {
					if v, exists := m[valueField]; exists {
						values = append(values, v)
					}
				}
			}
			return values, nil
		}
		next, ok := current[part].(map[string]interface{})
		if !ok {
			return nil, fmt.Errorf("路径 %s 在 %s 处中断", path, part)
		}
		current = next
	}
	return nil, fmt.Errorf("路径 %s 不完整", path)
}

// buildReqBody 构建请求参数
func buildReqBody(iface *entity.ApiInterface, page, pageSize int, lastSyncTime int64, extraParams map[string]interface{}) map[string]interface{} {
	body := make(map[string]interface{})
	if iface.RequestConfig != nil {
		for k, v := range iface.RequestConfig {
			if k == "time_field" || k == "headers" || k == "prefetch" ||
				k == "page_param" || k == "page_size_param" || k == "parameters_location" ||
				k == "cursor_pagination" || k == "time_field_mode" ||
				k == "body_wrapper_field" || k == "exclude_from_wrapper" ||
				k == "top_level_params" || k == "recursive" ||
				k == "max_recursive_depth" || k == "initial_cursor" ||
				k == "pagination_mode" || k == "full_sync_start_time" ||
				k == "row_inject" {
				continue
			}
			body[k] = v
		}
	}
	pageParam := "page"
	psParam := "page_size"
	if iface.RequestConfig != nil {
		if p, ok := iface.RequestConfig["page_param"].(string); ok {
			pageParam = p
		}
		if p, ok := iface.RequestConfig["page_size_param"].(string); ok {
			psParam = p
		}
	}
	// 偏移量分页（如钉钉 offset）：offset = (page-1) * pageSize
	paginationMode := ""
	if iface.RequestConfig != nil {
		if pm, ok := iface.RequestConfig["pagination_mode"].(string); ok {
			paginationMode = pm
		}
	}
	if paginationMode == "offset" {
		body[pageParam] = (page - 1) * pageSize
	} else {
		body[pageParam] = page
	}
	body[psParam] = pageSize

	// 时间过滤处理：支持两种模式
	// 1. "filtering" 模式（默认）：生成 filtering=[{"field":"...","operator":"GREATER_EQUALS","values":["..."]}]（腾讯）
	// 2. "range" 模式：生成 beginTime/endTime + queryType（快手）
	if iface.RequestConfig != nil {
		if tf, ok := iface.RequestConfig["time_field"].(string); ok && tf != "" {
			timeMode := "filtering"
			if tm, ok := iface.RequestConfig["time_field_mode"].(string); ok && tm != "" {
				timeMode = tm
			}

			if timeMode == "range" {
				// 快手模式：beginTime/endTime（毫秒时间戳）
				timeMs := lastSyncTime
				if timeMs <= 0 {
					// 全量：优先使用配置的 full_sync_start_time，否则默认90天前
					if fst, ok := iface.RequestConfig["full_sync_start_time"].(float64); ok && fst > 0 {
						timeMs = int64(fst)
					} else {
						timeMs = time.Now().Add(-90 * 24 * time.Hour).UnixMilli()
					}
				}
				body["queryType"] = 2
				body["beginTime"] = timeMs
				body["endTime"] = time.Now().UnixMilli()
			} else if lastSyncTime > 0 {
				// 腾讯 filtering 模式（仅增量时）
				timeFilter := map[string]interface{}{
					"field":    tf,
					"operator": "GREATER_EQUALS",
					"values":   []interface{}{fmt.Sprintf("%d", lastSyncTime)},
				}
				if existing, ok := body["filtering"].([]interface{}); ok {
					body["filtering"] = append(existing, timeFilter)
				} else {
					body["filtering"] = []interface{}{timeFilter}
				}
			} else if fst, ok := iface.RequestConfig["full_sync_start_time"].(float64); ok && fst > 0 {
				// 全量 filtering 模式：指定了 full_sync_start_time，从该时间戳开始拉取
				timeFilter := map[string]interface{}{
					"field":    tf,
					"operator": "GREATER_EQUALS",
					"values":   []interface{}{fmt.Sprintf("%d", int64(fst))},
				}
				if existing, ok := body["filtering"].([]interface{}); ok {
					body["filtering"] = append(existing, timeFilter)
				} else {
					body["filtering"] = []interface{}{timeFilter}
				}
			}
		}
	}

	for k, v := range extraParams {
		body[k] = v
	}

	// body_wrapper_field 支持：将业务参数包装到指定字段（如快手 API 的 param JSON）
	if iface.RequestConfig != nil {
		if wf, ok := iface.RequestConfig["body_wrapper_field"].(string); ok && wf != "" {
			excludeSet := map[string]bool{"method": true, "version": true, "signMethod": true}
			if excl, ok := iface.RequestConfig["exclude_from_wrapper"].([]interface{}); ok {
				for _, v := range excl {
					if s, ok := v.(string); ok {
						excludeSet[s] = true
					}
				}
			}
			wrapperObj := make(map[string]interface{})
			for k, v := range body {
				if !excludeSet[k] && k != wf {
					wrapperObj[k] = v
					delete(body, k)
				}
			}
			b, err := json.Marshal(wrapperObj)
			if err != nil {
				logrus.Errorf("JSON序列化 wrapper 失败: %v", err)
			} else {
				body[wf] = string(b)
			}
		}
	}

	return body
}

// parseRespExt 解析响应，支持自定义成功判断和数据路径
func parseRespExt(raw []byte, rc map[string]interface{}) ([]map[string]interface{}, int, int64, string, error) {
	var respMap map[string]interface{}
	if err := json.Unmarshal(raw, &respMap); err != nil {
		return nil, 0, 0, "", fmt.Errorf("JSON解析失败: %w", err)
	}
	successField, successVal := "code", float64(0)
	msgField, listPath, cursorPath := "message", "data", ""
	hasMorePath := ""
	singleRecord := false
	if rc != nil {
		if sf, _ := rc["success_field"].(string); sf != "" {
			successField = sf
		}
		if sv, ok := rc["success_value"]; ok {
			if f, ok := toFloat64(sv); ok {
				successVal = f
			}
		}
		if mf, _ := rc["message_field"].(string); mf != "" {
			msgField = mf
		}
		if lp, _ := rc["list_path"].(string); lp != "" {
			listPath = lp
		}
		if cf, _ := rc["cursor_field"].(string); cf != "" {
			cursorPath = cf
		}
		if sr, _ := rc["single_record"].(bool); sr {
			singleRecord = true
		}
		if hm, _ := rc["has_more_field"].(string); hm != "" {
			hasMorePath = hm
		}
	}
	if v, ok := respMap[successField]; ok {
		actual, _ := toFloat64(v)
		if actual != successVal {
			msg, _ := respMap[msgField].(string)
			return nil, 0, 0, "", fmt.Errorf("API错误: %s=%v, %s=%s", successField, v, msgField, msg)
		}
	}

	// 解析 list_path，支持最后一段是数组的情况（如 data.orderList）
	var listData []interface{}
	var dataContainer map[string]interface{}
	if listPath != "" {
		parts := strings.Split(listPath, ".")
		cur := respMap
		for i, p := range parts {
			if i == len(parts)-1 {
				// 最后一段：可能直接是数组，也可能是包含 list/orderList 的 map
				listData, _ = cur[p].([]interface{})
				if listData == nil {
					if m, ok := cur[p].(map[string]interface{}); ok {
						dataContainer = m
						if l, ok := m["list"]; ok {
							listData, _ = l.([]interface{})
						}
						if listData == nil {
							if ol, ok := m["orderList"]; ok {
								listData, _ = ol.([]interface{})
							}
						}
					}
				} else {
					dataContainer = cur
				}
			} else {
				next, ok := cur[p].(map[string]interface{})
				if !ok {
					return nil, 0, 0, "", fmt.Errorf("路径 %s 在 %s 处中断", listPath, p)
				}
				cur = next
			}
		}
	}
	if listData == nil {
		if singleRecord && listPath != "" {
			// 详情接口：list_path 指向单个对象，包装为单元素数组
			parts := strings.Split(listPath, ".")
			cur := respMap
			ok := true
			for _, p := range parts {
				if m, exists := cur[p].(map[string]interface{}); exists {
					cur = m
				} else {
					ok = false
					break
				}
			}
			if ok {
				listData = []interface{}{cur}
				dataContainer = cur
			}
		}
	}
	if listData == nil {
		// 回退到根级字段
		listData, _ = respMap["list"].([]interface{})
		if listData == nil {
			listData, _ = respMap["orderList"].([]interface{})
		}
		dataContainer = respMap
	}
	var rows []map[string]interface{}
	totalPages, maxTime := 1, int64(0)
	for _, item := range listData {
		if m, ok := item.(map[string]interface{}); ok {
			// 展平嵌套 map：将子 map 的字段合并到顶层（如 orderBaseInfo.oid → oid）
			flat := flattenRow(m)
			j, _ := json.Marshal(m)
			flat["raw_data"] = string(j)
			for _, tf := range []string{"last_modified_time", "created_time", "update_time", "createTime", "updateTime", "lastModifiedTime"} {
				if t, ok := flat[tf].(float64); ok && int64(t) > maxTime {
					maxTime = int64(t)
				}
			}
			rows = append(rows, flat)
		}
	}
	nextCursor := ""
	if cursorPath != "" {
		cp := strings.Split(cursorPath, ".")
		cc := respMap
		for i, p := range cp {
			if i == len(cp)-1 {
				if s, ok := cc[p].(string); ok {
					nextCursor = s
				} else if f, ok := cc[p].(float64); ok {
					// 数字游标（如钉钉 next_cursor=10）
					nextCursor = fmt.Sprintf("%.0f", f)
				}
			} else if m, ok := cc[p].(map[string]interface{}); ok {
				cc = m
			}
		}
	}
	// has_more 字段支持：false 时标记游标结束
	if hasMorePath != "" {
		parts := strings.Split(hasMorePath, ".")
		cc := respMap
		for i, p := range parts {
			if i == len(parts)-1 {
				if b, ok := cc[p].(bool); ok && !b {
					nextCursor = "nomore"
				}
			} else if m, ok := cc[p].(map[string]interface{}); ok {
				cc = m
			}
		}
	}
	if pi, ok := dataContainer["page_info"].(map[string]interface{}); ok {
		if tp, ok := pi["total_page"].(float64); ok {
			totalPages = int(tp)
		}
	}
	return rows, totalPages, maxTime, nextCursor, nil
}

// flattenRow 展平嵌套 map：将子 map 的字段递归合并到顶层
// 数组类型的字段保持原样不展平
func flattenRow(m map[string]interface{}) map[string]interface{} {
	result := make(map[string]interface{}, len(m))
	for k, v := range m {
		if sub, ok := v.(map[string]interface{}); ok {
			// 子 map 递归展平后合并到顶层
			for sk, sv := range flattenRow(sub) {
				result[sk] = sv
			}
		} else {
			result[k] = v
		}
	}
	return result
}

// parseResp 兼容旧版，保持4个返回值
func parseResp(raw []byte, responseConfig map[string]interface{}) ([]map[string]interface{}, int, int64, error) {
	rows, tp, mt, _, err := parseRespExt(raw, responseConfig)
	return rows, tp, mt, err
}

func savePage(ctx context.Context, td *TableDefinition, rows []map[string]interface{}) (int, error) {
	if len(rows) == 0 {
		return 0, nil
	}
	colSet := make(map[string]bool)
	for _, c := range td.Columns {
		colSet[c.Name] = true
	}
	var clean []map[string]interface{}
	for _, row := range rows {
		c := make(map[string]interface{})
		for k, v := range row {
			if colSet[k] {
				c[k] = v
			}
		}
		if r, ok := row["raw_data"]; ok {
			c["raw_data"] = r
		}
		clean = append(clean, c)
	}
	return InsertRows(ctx, td.TableName, td.ConflictKeys, clean)
}

func getLastSyncTime(ctx context.Context, platformCode, interfaceCode string) int64 {
	var t int64
	gfdb.DB(ctx).Model(ctx, consts.SyncTrackerTable).
		Fields("last_sync_time").
		Where("platform_code", platformCode).
		Where("interface_code", interfaceCode).
		Scan(&t)
	return t
}

func getSyncStatus(ctx context.Context, platformCode, interfaceCode string) string {
	var s string
	gfdb.DB(ctx).Model(ctx, consts.SyncTrackerTable).
		Fields("sync_status").
		Where("platform_code", platformCode).
		Where("interface_code", interfaceCode).
		Scan(&s)
	return s
}

func markSyncRunning(ctx context.Context, platformCode, interfaceCode string, lastSyncTime int64) {
	gfdb.DB(ctx).Model(ctx, consts.SyncTrackerTable).
		Data(map[string]interface{}{
			"platform_code":  platformCode,
			"interface_code": interfaceCode,
			"last_sync_time": lastSyncTime,
			"sync_status":    "running",
		}).
		OnConflict("platform_code", "interface_code").
		Save()
}

func updateSyncTime(ctx context.Context, platformCode, interfaceCode string, t int64) {
	gfdb.DB(ctx).Model(ctx, consts.SyncTrackerTable).
		Data(map[string]interface{}{
			"platform_code":  platformCode,
			"interface_code": interfaceCode,
			"last_sync_time": t,
			"last_sync_at":   time.Now(),
			"sync_status":    "success",
		}).
		OnConflict("platform_code", "interface_code").
		Save()
}

func recordFailure(ctx context.Context, platformCode, interfaceCode, taskType, errMsg string) {
	dao.SyncTaskLog.Create(ctx, &taskDto.CreateSyncTaskLogReq{
		TaskID:        fmt.Sprintf("%s_%s_%d", platformCode, interfaceCode, time.Now().UnixNano()),
		TaskType:      taskType,
		PlatformCode:  platformCode,
		InterfaceCode: interfaceCode,
		Status:        "failed",
		MaxRetry:      3,
		StartTime:     time.Now(),
		RequestParams: map[string]interface{}{
			"error": errMsg,
		},
	})
}

// findInterfaceByURL 在所有接口中查找匹配 URL 的接口
func findInterfaceByURL(ifaces []entity.ApiInterface, url string) *entity.ApiInterface {
	for i := range ifaces {
		if ifaces[i].Url == url {
			return &ifaces[i]
		}
	}
	return nil
}

// injectRowFields 将请求参数中 row_inject 指定的字段注入到响应行中
// 用于需要将请求参数（如 statisticsMonth）持久化到表中，但响应不含该字段的场景
func injectRowFields(rows []map[string]interface{}, body map[string]interface{}, requestConfig map[string]interface{}) {
	if requestConfig == nil || body == nil {
		return
	}
	rawInject, ok := requestConfig["row_inject"]
	if !ok {
		return
	}
	injectList, ok := rawInject.([]interface{})
	if !ok {
		return
	}
	for _, item := range injectList {
		fieldName, ok := item.(string)
		if !ok {
			continue
		}
		val, exists := body[fieldName]
		if !exists {
			continue
		}
		for i := range rows {
			rows[i][fieldName] = val
		}
	}
}