导出系统

internal/exporter/query_params.go

@@ -0,0 +1,56 @@
+package exporter
+
+import (
+	"github.com/bytedance/sonic"
+
+	"github.com/break/junhong_cmp_fiber/internal/model"
+)
+
+// ParseExportParams 从导出任务快照解析数据源执行参数。
+func ParseExportParams(task *model.ExportTask) ExportParams {
+	params := ExportParams{Filters: make(map[string]any)}
+	if task == nil {
+		return params
+	}
+
+	params.ScopeShopIDs = append(params.ScopeShopIDs, task.ScopeShopIDs...)
+	params.UserType = task.CreatorUserType
+
+	var raw map[string]any
+	if len(task.QueryJSON) == 0 {
+		return params
+	}
+	if err := sonic.Unmarshal(task.QueryJSON, &raw); err != nil {
+		return params
+	}
+
+	if filters, ok := raw["filters"].(map[string]any); ok {
+		params.Filters = filters
+	}
+	return params
+}
+
+// ResolvedHeadersFromTask 从任务 query_json 读取 dispatch 阶段固定的表头。
+func ResolvedHeadersFromTask(task *model.ExportTask) []string {
+	if task == nil || len(task.QueryJSON) == 0 {
+		return nil
+	}
+
+	var raw map[string]any
+	if err := sonic.Unmarshal(task.QueryJSON, &raw); err != nil {
+		return nil
+	}
+
+	values, ok := raw["resolved_headers"].([]any)
+	if !ok {
+		return nil
+	}
+
+	headers := make([]string, 0, len(values))
+	for _, value := range values {
+		if text, ok := value.(string); ok {
+			headers = append(headers, text)
+		}
+	}
+	return headers
+}