feat(trade): implement second-hand trading/flea market feature

Add complete trade functionality including: - TradeItem, TradeImage, TradeFavorite models with auto-migration - TradeRepository with CRUD and favorite operations - TradeService with business logic for listing, creating, updating, status management - TradeHandler with RESTful endpoints for trade operations - DTOs and converters for request/response handling Routes include: list, get by id, create, update, delete, status update, view recording, favorite/unfavorite.
2026-04-26 15:20:26 +08:00
parent 1b50d6c792
commit 0ca02f7ef3
13 changed files with 1131 additions and 399 deletions
--- a/internal/dto/trade_dto.go
+++ b/internal/dto/trade_dto.go
@@ -0,0 +1,100 @@
+package dto
+
+import (
+	"with_you/internal/model"
+)
+
+type TradeImageResponse struct {
+	ID              string `json:"id"`
+	URL             string `json:"url"`
+	ThumbnailURL    string `json:"thumbnail_url"`
+	PreviewURL      string `json:"preview_url"`
+	PreviewURLLarge string `json:"preview_url_large"`
+	Width           int    `json:"width"`
+	Height          int    `json:"height"`
+}
+
+type TradeItemResponse struct {
+	ID              string                `json:"id"`
+	UserID          string                `json:"user_id"`
+	TradeType       string                `json:"trade_type"`
+	Category        string                `json:"category"`
+	Title           string                `json:"title"`
+	Content         string                `json:"content"`
+	Segments        model.MessageSegments `json:"segments,omitempty"`
+	Images          []TradeImageResponse   `json:"images"`
+	Price           *float64              `json:"price,omitempty"`
+	OriginalPrice   *float64              `json:"original_price,omitempty"`
+	Condition       string                `json:"condition,omitempty"`
+	Location        string                `json:"location,omitempty"`
+	Status          string                `json:"status"`
+	ViewsCount      int                   `json:"views_count"`
+	FavoritesCount  int                   `json:"favorites_count"`
+	IsFavorited     bool                  `json:"is_favorited"`
+	Author          *UserResponse         `json:"author"`
+	CreatedAt       string                `json:"created_at"`
+	UpdatedAt       string                `json:"updated_at"`
+}
+
+type TradeItemDetailResponse struct {
+	ID              string                `json:"id"`
+	UserID          string                `json:"user_id"`
+	TradeType       string                `json:"trade_type"`
+	Category        string                `json:"category"`
+	Title           string                `json:"title"`
+	Content         string                `json:"content"`
+	Segments        model.MessageSegments `json:"segments,omitempty"`
+	Images          []TradeImageResponse   `json:"images"`
+	Price           *float64              `json:"price,omitempty"`
+	OriginalPrice   *float64              `json:"original_price,omitempty"`
+	Condition       string                `json:"condition,omitempty"`
+	Location        string                `json:"location,omitempty"`
+	Status          string                `json:"status"`
+	ViewsCount      int                   `json:"views_count"`
+	FavoritesCount  int                   `json:"favorites_count"`
+	IsFavorited     bool                  `json:"is_favorited"`
+	Author          *UserResponse         `json:"author"`
+	CreatedAt       string                `json:"created_at"`
+	UpdatedAt       string                `json:"updated_at"`
+}
+
+type CreateTradeItemRequest struct {
+	TradeType     string                `json:"trade_type" binding:"required,oneof=sell buy"`
+	Category      string                `json:"category" binding:"required,oneof=digital book clothing daily cosmetics sport ticket other"`
+	Title         string                `json:"title" binding:"required,max=100"`
+	Content       string                `json:"content"`
+	Segments      model.MessageSegments `json:"segments"`
+	Images        []string              `json:"images"`
+	Price         *float64              `json:"price"`
+	OriginalPrice  *float64              `json:"original_price"`
+	Condition     string                `json:"condition" binding:"omitempty,oneof=brand_new like_new lightly_used well_used"`
+	Location      string                `json:"location" binding:"omitempty,max=100"`
+}
+
+type UpdateTradeItemRequest struct {
+	TradeType    *string               `json:"trade_type" binding:"omitempty,oneof=sell buy"`
+	Category     *string               `json:"category" binding:"omitempty,oneof=digital book clothing daily cosmetics sport ticket other"`
+	Title        *string               `json:"title" binding:"omitempty,max=100"`
+	Content      *string               `json:"content"`
+	Segments     model.MessageSegments `json:"segments"`
+	Images       []string              `json:"images"`
+	Price        *float64              `json:"price"`
+	OriginalPrice *float64              `json:"original_price"`
+	Condition    *string               `json:"condition" binding:"omitempty,oneof=brand_new like_new lightly_used well_used"`
+	Location     *string               `json:"location" binding:"omitempty,max=100"`
+}
+
+type UpdateTradeItemStatusRequest struct {
+	Status string `json:"status" binding:"required,oneof=active sold bought offline"`
+}
+
+type TradeCursorPageResponse struct {
+	Items      []*TradeItemResponse `json:"list"`
+	NextCursor string               `json:"next_cursor,omitempty"`
+	PrevCursor string               `json:"prev_cursor,omitempty"`
+	HasMore    bool                 `json:"has_more"`
+}
+
+type TradeFavoriteResponse struct {
+	Favorited bool `json:"favorited"`
+}