first commit

app/main/api/internal/logic/admin_agent/AdminGetOrderTrendsLogic.go

@@ -0,0 +1,120 @@
+package admin_agent
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"sim-server/app/main/api/internal/svc"
+	"sim-server/app/main/api/internal/types"
+	"sim-server/common/globalkey"
+
+	"github.com/zeromicro/go-zero/core/logx"
+)
+
+type AdminGetOrderTrendsLogic struct {
+	logx.Logger
+	ctx    context.Context
+	svcCtx *svc.ServiceContext
+}
+
+func NewAdminGetOrderTrendsLogic(ctx context.Context, svcCtx *svc.ServiceContext) *AdminGetOrderTrendsLogic {
+	return &AdminGetOrderTrendsLogic{
+		Logger: logx.WithContext(ctx),
+		ctx:    ctx,
+		svcCtx: svcCtx,
+	}
+}
+
+func (l *AdminGetOrderTrendsLogic) AdminGetOrderTrends(req *types.AdminGetOrderTrendsReq) (resp *types.AdminGetOrderTrendsResp, err error) {
+	// 1. Parse date parameters with default to last 30 days
+	var startDate, endDate time.Time
+
+	if req.StartDate != "" {
+		startDate, err = time.Parse("2006-01-02", req.StartDate)
+		if err != nil {
+			return nil, fmt.Errorf("invalid start_date format: %v", err)
+		}
+	} else {
+		// Default to 30 days ago
+		startDate = time.Now().AddDate(0, 0, -30)
+	}
+
+	if req.EndDate != "" {
+		endDate, err = time.Parse("2006-01-02", req.EndDate)
+		if err != nil {
+			return nil, fmt.Errorf("invalid end_date format: %v", err)
+		}
+		// Set end date to end of day
+		endDate = time.Date(endDate.Year(), endDate.Month(), endDate.Day(), 23, 59, 59, 0, time.Local)
+	} else {
+		// Default to today
+		endDate = time.Now()
+	}
+
+	// Ensure start date is before end date
+	if startDate.After(endDate) {
+		return nil, fmt.Errorf("start_date must be before end_date")
+	}
+
+	// 2. Query all commissions in date range
+	builder := l.svcCtx.AgentCommissionModel.SelectBuilder()
+	builder = builder.Where("del_state = ?", globalkey.DelStateNo)
+	builder = builder.Where("create_time >= ?", startDate)
+	builder = builder.Where("create_time <= ?", endDate)
+
+	commissions, err := l.svcCtx.AgentCommissionModel.FindAll(l.ctx, builder, "")
+	if err != nil {
+		return nil, fmt.Errorf("failed to query commissions: %v", err)
+	}
+
+	// 3. Group by date in Go
+	dateMap := make(map[string]*struct {
+		Amount float64
+		Count  int64
+	})
+
+	for _, commission := range commissions {
+		date := commission.CreateTime.Format("2006-01-02")
+		if _, exists := dateMap[date]; !exists {
+			dateMap[date] = &struct {
+				Amount float64
+				Count  int64
+			}{}
+		}
+		dateMap[date].Amount += commission.Amount
+		dateMap[date].Count++
+	}
+
+	// 4. Build sorted response
+	dates := make([]string, 0, len(dateMap))
+	amounts := make([]float64, 0, len(dateMap))
+	counts := make([]int64, 0, len(dateMap))
+
+	// Sort dates
+	sortedDates := make([]string, 0, len(dateMap))
+	for date := range dateMap {
+		sortedDates = append(sortedDates, date)
+	}
+
+	// Simple bubble sort (can be optimized with sort package)
+	for i := 0; i < len(sortedDates); i++ {
+		for j := i + 1; j < len(sortedDates); j++ {
+			if sortedDates[i] > sortedDates[j] {
+				sortedDates[i], sortedDates[j] = sortedDates[j], sortedDates[i]
+			}
+		}
+	}
+
+	for _, date := range sortedDates {
+		dates = append(dates, date)
+		amounts = append(amounts, dateMap[date].Amount)
+		counts = append(counts, dateMap[date].Count)
+	}
+
+	return &types.AdminGetOrderTrendsResp{
+		Dates:   dates,
+		Amounts: amounts,
+		Counts:  counts,
+	}, nil
+}