684 lines
19 KiB
Go
684 lines
19 KiB
Go
package handlers
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import (
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"api-service/internal/config"
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"api-service/internal/database"
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models "api-service/internal/models/order"
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"context"
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"database/sql"
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"fmt"
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"log"
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"net/http"
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"strconv"
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"strings"
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"sync"
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"time"
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"github.com/gin-gonic/gin"
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"github.com/go-playground/validator/v10"
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"github.com/google/uuid"
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)
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var (
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db database.Service
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once sync.Once
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validate *validator.Validate
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)
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// Initialize the database connection and validator
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func init() {
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once.Do(func() {
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db = database.New(config.LoadConfig())
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validate = validator.New()
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// Register custom validations if needed
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validate.RegisterValidation("order_status", validateOrderStatus)
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if db == nil {
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log.Fatal("Failed to initialize database connection")
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}
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})
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}
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// Custom validation for order status
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func validateOrderStatus(fl validator.FieldLevel) bool {
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return models.IsValidStatus(fl.Field().String())
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}
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// OrderHandler handles order services
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type OrderHandler struct {
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db database.Service
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}
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// NewOrderHandler creates a new OrderHandler
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func NewOrderHandler() *OrderHandler {
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return &OrderHandler{
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db: db,
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}
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}
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// GetOrder godoc
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// @Summary Get order with pagination and optional aggregation
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// @Description Returns a paginated list of orders with optional summary statistics
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// @Tags order
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// @Accept json
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// @Produce json
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// @Param limit query int false "Limit (max 100)" default(10)
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// @Param offset query int false "Offset" default(0)
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// @Param include_summary query bool false "Include aggregation summary" default(false)
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// @Param status query string false "Filter by status"
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// @Param search query string false "Search in multiple fields"
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// @Success 200 {object} models.OrderGetResponse "Success response"
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// @Failure 400 {object} models.ErrorResponse "Bad request"
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// @Failure 500 {object} models.ErrorResponse "Internal server error"
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// @Router /api/v1/orders [get]
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func (h *OrderHandler) GetOrder(c *gin.Context) {
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// Parse pagination parameters
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limit, offset, err := h.parsePaginationParams(c)
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if err != nil {
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h.respondError(c, "Invalid pagination parameters", err, http.StatusBadRequest)
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return
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}
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// Parse filter parameters
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filter := h.parseFilterParams(c)
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includeAggregation := c.Query("include_summary") == "true"
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// Get database connection
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dbConn, err := h.db.GetDB("satudata")
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if err != nil {
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h.logAndRespondError(c, "Database connection failed", err, http.StatusInternalServerError)
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return
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}
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// Create context with timeout
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ctx, cancel := context.WithTimeout(c.Request.Context(), 30*time.Second)
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defer cancel()
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// Execute concurrent operations
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var (
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items []models.Order
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total int
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aggregateData *models.AggregateData
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wg sync.WaitGroup
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errChan = make(chan error, 3)
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mu sync.Mutex
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)
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// Fetch total count
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wg.Add(1)
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go func() {
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defer wg.Done()
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if err := h.getTotalCount(ctx, dbConn, filter, &total); err != nil {
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mu.Lock()
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errChan <- fmt.Errorf("failed to get total count: %w", err)
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mu.Unlock()
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}
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}()
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// Fetch main data - FIXED: Proper method name
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wg.Add(1)
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go func() {
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defer wg.Done()
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result, err := h.fetchOrders(ctx, dbConn, filter, limit, offset)
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mu.Lock()
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if err != nil {
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errChan <- fmt.Errorf("failed to fetch data: %w", err)
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} else {
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items = result
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}
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mu.Unlock()
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}()
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// Fetch aggregation data if requested
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if includeAggregation {
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wg.Add(1)
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go func() {
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defer wg.Done()
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result, err := h.getAggregateData(ctx, dbConn, filter)
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mu.Lock()
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if err != nil {
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errChan <- fmt.Errorf("failed to get aggregate data: %w", err)
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} else {
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aggregateData = result
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}
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mu.Unlock()
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}()
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}
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// Wait for all goroutines
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wg.Wait()
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close(errChan)
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// Check for errors
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for err := range errChan {
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if err != nil {
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h.logAndRespondError(c, "Data processing failed", err, http.StatusInternalServerError)
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return
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}
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}
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// Build response
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meta := h.calculateMeta(limit, offset, total)
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response := models.OrderGetResponse{
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Message: "Data order berhasil diambil",
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Data: items,
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Meta: meta,
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}
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if includeAggregation && aggregateData != nil {
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response.Summary = aggregateData
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}
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c.JSON(http.StatusOK, response)
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}
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// GetOrderByID godoc
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// @Summary Get Order by ID
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// @Description Returns a single order by ID
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// @Tags order
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// @Accept json
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// @Produce json
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// @Param id path string true "Order ID (UUID)"
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// @Success 200 {object} models.OrderGetByIDResponse "Success response"
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// @Failure 400 {object} models.ErrorResponse "Invalid ID format"
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// @Failure 404 {object} models.ErrorResponse "Order not found"
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// @Failure 500 {object} models.ErrorResponse "Internal server error"
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// @Router /api/v1/order/{id} [get]
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func (h *OrderHandler) GetOrderByID(c *gin.Context) {
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id := c.Param("id")
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// Validate UUID format
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if _, err := uuid.Parse(id); err != nil {
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h.respondError(c, "Invalid ID format", err, http.StatusBadRequest)
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return
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}
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dbConn, err := h.db.GetDB("satudata")
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if err != nil {
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h.logAndRespondError(c, "Database connection failed", err, http.StatusInternalServerError)
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return
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}
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ctx, cancel := context.WithTimeout(c.Request.Context(), 15*time.Second)
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defer cancel()
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item, err := h.getOrderByID(ctx, dbConn, id)
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if err != nil {
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if err == sql.ErrNoRows {
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h.respondError(c, "Order not found", err, http.StatusNotFound)
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} else {
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h.logAndRespondError(c, "Failed to get order", err, http.StatusInternalServerError)
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}
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return
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}
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response := models.OrderGetByIDResponse{
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Message: "Order details retrieved successfully",
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Data: item,
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}
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c.JSON(http.StatusOK, response)
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}
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// CreateOrder godoc
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// @Summary Create order
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// @Description Creates a new order record
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// @Tags order
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// @Accept json
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// @Produce json
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// @Param request body models.OrderCreateRequest true "Order creation request"
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// @Success 201 {object} models.OrderCreateResponse "Order created successfully"
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// @Failure 400 {object} models.ErrorResponse "Bad request or validation error"
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// @Failure 500 {object} models.ErrorResponse "Internal server error"
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// @Router /api/v1/orders [post]
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func (h *OrderHandler) CreateOrder(c *gin.Context) {
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var req models.OrderCreateRequest
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if err := c.ShouldBindJSON(&req); err != nil {
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h.respondError(c, "Invalid request body", err, http.StatusBadRequest)
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return
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}
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// Validate request
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if err := validate.Struct(&req); err != nil {
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h.respondError(c, "Validation failed", err, http.StatusBadRequest)
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return
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}
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dbConn, err := h.db.GetDB("satudata")
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if err != nil {
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h.logAndRespondError(c, "Database connection failed", err, http.StatusInternalServerError)
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return
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}
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ctx, cancel := context.WithTimeout(c.Request.Context(), 15*time.Second)
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defer cancel()
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item, err := h.createOrder(ctx, dbConn, &req)
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if err != nil {
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h.logAndRespondError(c, "Failed to create order", err, http.StatusInternalServerError)
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return
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}
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response := models.OrderCreateResponse{
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Message: "Order berhasil dibuat",
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Data: item,
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}
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c.JSON(http.StatusCreated, response)
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}
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// UpdateOrder godoc
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// @Summary Update order
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// @Description Updates an existing order record
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// @Tags order
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// @Accept json
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// @Produce json
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// @Param id path string true "Order ID (UUID)"
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// @Param request body models.OrderUpdateRequest true "Order update request"
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// @Success 200 {object} models.OrderUpdateResponse "Order updated successfully"
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// @Failure 400 {object} models.ErrorResponse "Bad request or validation error"
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// @Failure 404 {object} models.ErrorResponse "Order not found"
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// @Failure 500 {object} models.ErrorResponse "Internal server error"
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// @Router /api/v1/order/{id} [put]
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func (h *OrderHandler) UpdateOrder(c *gin.Context) {
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id := c.Param("id")
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// Validate UUID format
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if _, err := uuid.Parse(id); err != nil {
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h.respondError(c, "Invalid ID format", err, http.StatusBadRequest)
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return
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}
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var req models.OrderUpdateRequest
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if err := c.ShouldBindJSON(&req); err != nil {
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h.respondError(c, "Invalid request body", err, http.StatusBadRequest)
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return
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}
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// Set ID from path parameter
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req.ID = id
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// Validate request
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if err := validate.Struct(&req); err != nil {
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h.respondError(c, "Validation failed", err, http.StatusBadRequest)
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return
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}
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dbConn, err := h.db.GetDB("satudata")
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if err != nil {
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h.logAndRespondError(c, "Database connection failed", err, http.StatusInternalServerError)
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return
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}
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ctx, cancel := context.WithTimeout(c.Request.Context(), 15*time.Second)
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defer cancel()
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item, err := h.updateOrder(ctx, dbConn, &req)
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if err != nil {
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if err == sql.ErrNoRows {
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h.respondError(c, "Order not found", err, http.StatusNotFound)
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} else {
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h.logAndRespondError(c, "Failed to update order", err, http.StatusInternalServerError)
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}
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return
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}
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response := models.OrderUpdateResponse{
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Message: "Order berhasil diperbarui",
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Data: item,
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}
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c.JSON(http.StatusOK, response)
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}
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// DeleteOrder godoc
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// @Summary Delete order
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// @Description Soft deletes a order by setting status to 'deleted'
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// @Tags order
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// @Accept json
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// @Produce json
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// @Param id path string true "Order ID (UUID)"
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// @Success 200 {object} models.OrderDeleteResponse "Order deleted successfully"
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// @Failure 400 {object} models.ErrorResponse "Invalid ID format"
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// @Failure 404 {object} models.ErrorResponse "Order not found"
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// @Failure 500 {object} models.ErrorResponse "Internal server error"
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// @Router /api/v1/order/{id} [delete]
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func (h *OrderHandler) DeleteOrder(c *gin.Context) {
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id := c.Param("id")
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// Validate UUID format
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if _, err := uuid.Parse(id); err != nil {
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h.respondError(c, "Invalid ID format", err, http.StatusBadRequest)
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return
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}
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dbConn, err := h.db.GetDB("satudata")
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if err != nil {
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h.logAndRespondError(c, "Database connection failed", err, http.StatusInternalServerError)
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return
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}
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ctx, cancel := context.WithTimeout(c.Request.Context(), 15*time.Second)
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defer cancel()
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err = h.deleteOrder(ctx, dbConn, id)
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if err != nil {
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if err == sql.ErrNoRows {
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h.respondError(c, "Order not found", err, http.StatusNotFound)
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} else {
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h.logAndRespondError(c, "Failed to delete order", err, http.StatusInternalServerError)
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}
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return
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}
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response := models.OrderDeleteResponse{
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Message: "Order berhasil dihapus",
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ID: id,
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}
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c.JSON(http.StatusOK, response)
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}
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// GetOrderStats godoc
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// @Summary Get order statistics
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// @Description Returns comprehensive statistics about order data
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// @Tags order
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// @Accept json
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// @Produce json
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// @Param status query string false "Filter statistics by status"
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// @Success 200 {object} models.AggregateData "Statistics data"
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// @Failure 500 {object} models.ErrorResponse "Internal server error"
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// @Router /api/v1/orders/stats [get]
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func (h *OrderHandler) GetOrderStats(c *gin.Context) {
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dbConn, err := h.db.GetDB("satudata")
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if err != nil {
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h.logAndRespondError(c, "Database connection failed", err, http.StatusInternalServerError)
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return
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}
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ctx, cancel := context.WithTimeout(c.Request.Context(), 15*time.Second)
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defer cancel()
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filter := h.parseFilterParams(c)
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aggregateData, err := h.getAggregateData(ctx, dbConn, filter)
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if err != nil {
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h.logAndRespondError(c, "Failed to get statistics", err, http.StatusInternalServerError)
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return
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}
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c.JSON(http.StatusOK, gin.H{
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"message": "Statistik order berhasil diambil",
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"data": aggregateData,
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})
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}
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// Database operations
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func (h *OrderHandler) getOrderByID(ctx context.Context, dbConn *sql.DB, id string) (*models.Order, error) {
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query := "SELECT id, status, date_created, date_updated, name FROM data_order WHERE id = $1 AND status != 'deleted'"
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row := dbConn.QueryRowContext(ctx, query, id)
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var item models.Order
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err := row.Scan(&item.ID, &item.Status, &item.DateCreated, &item.DateUpdated, &item.Name)
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if err != nil {
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return nil, err
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}
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return &item, nil
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}
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func (h *OrderHandler) createOrder(ctx context.Context, dbConn *sql.DB, req *models.OrderCreateRequest) (*models.Order, error) {
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id := uuid.New().String()
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now := time.Now()
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query := "INSERT INTO data_order (id, status, date_created, date_updated, name) VALUES ($1, $2, $3, $4, $5) RETURNING id, status, date_created, date_updated, name"
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row := dbConn.QueryRowContext(ctx, query, id, req.Status, now, now, req.Name)
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var item models.Order
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err := row.Scan(&item.ID, &item.Status, &item.DateCreated, &item.DateUpdated, &item.Name)
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if err != nil {
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return nil, fmt.Errorf("failed to create order: %w", err)
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}
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return &item, nil
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}
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func (h *OrderHandler) updateOrder(ctx context.Context, dbConn *sql.DB, req *models.OrderUpdateRequest) (*models.Order, error) {
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now := time.Now()
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query := "UPDATE data_order SET status = $2, date_updated = $3, name = $4 WHERE id = $1 AND status != 'deleted' RETURNING id, status, date_created, date_updated, name"
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row := dbConn.QueryRowContext(ctx, query, req.ID, req.Status, now, req.Name)
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var item models.Order
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err := row.Scan(&item.ID, &item.Status, &item.DateCreated, &item.DateUpdated, &item.Name)
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if err != nil {
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return nil, fmt.Errorf("failed to update order: %w", err)
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}
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return &item, nil
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}
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func (h *OrderHandler) deleteOrder(ctx context.Context, dbConn *sql.DB, id string) error {
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now := time.Now()
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query := "UPDATE data_order SET status = 'deleted', date_updated = $2 WHERE id = $1 AND status != 'deleted'"
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result, err := dbConn.ExecContext(ctx, query, id, now)
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if err != nil {
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return fmt.Errorf("failed to delete order: %w", err)
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}
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rowsAffected, err := result.RowsAffected()
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if err != nil {
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return fmt.Errorf("failed to get affected rows: %w", err)
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}
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if rowsAffected == 0 {
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return sql.ErrNoRows
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}
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return nil
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}
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func (h *OrderHandler) fetchOrders(ctx context.Context, dbConn *sql.DB, filter models.OrderFilter, limit, offset int) ([]models.Order, error) {
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whereClause, args := h.buildWhereClause(filter)
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query := fmt.Sprintf("SELECT id, status, date_created, date_updated, name FROM data_order WHERE %s ORDER BY date_created DESC NULLS LAST LIMIT $%d OFFSET $%d", whereClause, len(args)+1, len(args)+2)
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args = append(args, limit, offset)
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rows, err := dbConn.QueryContext(ctx, query, args...)
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if err != nil {
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return nil, fmt.Errorf("fetch orders query failed: %w", err)
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}
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defer rows.Close()
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items := make([]models.Order, 0, limit)
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for rows.Next() {
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var item models.Order
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err := rows.Scan(&item.ID, &item.Status, &item.DateCreated, &item.DateUpdated, &item.Name)
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if err != nil {
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return nil, fmt.Errorf("scan Order failed: %w", err)
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}
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items = append(items, item)
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}
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if err := rows.Err(); err != nil {
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return nil, fmt.Errorf("rows iteration error: %w", err)
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}
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return items, nil
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}
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func (h *OrderHandler) getTotalCount(ctx context.Context, dbConn *sql.DB, filter models.OrderFilter, total *int) error {
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whereClause, args := h.buildWhereClause(filter)
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countQuery := fmt.Sprintf("SELECT COUNT(*) FROM data_order WHERE %s", whereClause)
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if err := dbConn.QueryRowContext(ctx, countQuery, args...).Scan(total); err != nil {
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return fmt.Errorf("total count query failed: %w", err)
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}
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return nil
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}
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func (h *OrderHandler) getAggregateData(ctx context.Context, dbConn *sql.DB, filter models.OrderFilter) (*models.AggregateData, error) {
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aggregate := &models.AggregateData{
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ByStatus: make(map[string]int),
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}
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whereClause, args := h.buildWhereClause(filter)
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|
statusQuery := fmt.Sprintf("SELECT status, COUNT(*) FROM data_order WHERE %s GROUP BY status ORDER BY status", whereClause)
|
|
|
|
rows, err := dbConn.QueryContext(ctx, statusQuery, args...)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("status query failed: %w", err)
|
|
}
|
|
defer rows.Close()
|
|
|
|
for rows.Next() {
|
|
var status string
|
|
var count int
|
|
if err := rows.Scan(&status, &count); err != nil {
|
|
return nil, fmt.Errorf("status scan failed: %w", err)
|
|
}
|
|
aggregate.ByStatus[status] = count
|
|
|
|
switch status {
|
|
case "active":
|
|
aggregate.TotalActive = count
|
|
case "draft":
|
|
aggregate.TotalDraft = count
|
|
case "inactive":
|
|
aggregate.TotalInactive = count
|
|
}
|
|
}
|
|
|
|
return aggregate, nil
|
|
}
|
|
|
|
// Helper methods
|
|
func (h *OrderHandler) logAndRespondError(c *gin.Context, message string, err error, statusCode int) {
|
|
log.Printf("[ERROR] %s: %v", message, err)
|
|
h.respondError(c, message, err, statusCode)
|
|
}
|
|
|
|
func (h *OrderHandler) respondError(c *gin.Context, message string, err error, statusCode int) {
|
|
errorMessage := message
|
|
if gin.Mode() == gin.ReleaseMode {
|
|
errorMessage = "Internal server error"
|
|
}
|
|
|
|
c.JSON(statusCode, models.ErrorResponse{
|
|
Error: errorMessage,
|
|
Code: statusCode,
|
|
Message: err.Error(),
|
|
Timestamp: time.Now(),
|
|
})
|
|
}
|
|
|
|
func (h *OrderHandler) parsePaginationParams(c *gin.Context) (int, int, error) {
|
|
limit := 10 // Default limit
|
|
offset := 0 // Default offset
|
|
|
|
if limitStr := c.Query("limit"); limitStr != "" {
|
|
parsedLimit, err := strconv.Atoi(limitStr)
|
|
if err != nil {
|
|
return 0, 0, fmt.Errorf("invalid limit parameter: %s", limitStr)
|
|
}
|
|
if parsedLimit <= 0 {
|
|
return 0, 0, fmt.Errorf("limit must be greater than 0")
|
|
}
|
|
if parsedLimit > 100 {
|
|
return 0, 0, fmt.Errorf("limit cannot exceed 100")
|
|
}
|
|
limit = parsedLimit
|
|
}
|
|
|
|
if offsetStr := c.Query("offset"); offsetStr != "" {
|
|
parsedOffset, err := strconv.Atoi(offsetStr)
|
|
if err != nil {
|
|
return 0, 0, fmt.Errorf("invalid offset parameter: %s", offsetStr)
|
|
}
|
|
if parsedOffset < 0 {
|
|
return 0, 0, fmt.Errorf("offset cannot be negative")
|
|
}
|
|
offset = parsedOffset
|
|
}
|
|
|
|
return limit, offset, nil
|
|
}
|
|
|
|
func (h *OrderHandler) parseFilterParams(c *gin.Context) models.OrderFilter {
|
|
filter := models.OrderFilter{}
|
|
|
|
if status := c.Query("status"); status != "" {
|
|
if models.IsValidStatus(status) {
|
|
filter.Status = &status
|
|
}
|
|
}
|
|
|
|
if search := c.Query("search"); search != "" {
|
|
filter.Search = &search
|
|
}
|
|
|
|
// Parse date filters
|
|
if dateFromStr := c.Query("date_from"); dateFromStr != "" {
|
|
if dateFrom, err := time.Parse("2006-01-02", dateFromStr); err == nil {
|
|
filter.DateFrom = &dateFrom
|
|
}
|
|
}
|
|
|
|
if dateToStr := c.Query("date_to"); dateToStr != "" {
|
|
if dateTo, err := time.Parse("2006-01-02", dateToStr); err == nil {
|
|
filter.DateTo = &dateTo
|
|
}
|
|
}
|
|
|
|
return filter
|
|
}
|
|
|
|
func (h *OrderHandler) buildWhereClause(filter models.OrderFilter) (string, []interface{}) {
|
|
conditions := []string{"status != 'deleted'"}
|
|
args := []interface{}{}
|
|
paramCount := 1
|
|
|
|
if filter.Status != nil {
|
|
conditions = append(conditions, fmt.Sprintf("status = $%d", paramCount))
|
|
args = append(args, *filter.Status)
|
|
paramCount++
|
|
}
|
|
|
|
if filter.Search != nil {
|
|
searchCondition := fmt.Sprintf("name ILIKE $%d", paramCount)
|
|
conditions = append(conditions, searchCondition)
|
|
searchTerm := "%" + *filter.Search + "%"
|
|
args = append(args, searchTerm)
|
|
paramCount++
|
|
}
|
|
|
|
if filter.DateFrom != nil {
|
|
conditions = append(conditions, fmt.Sprintf("date_created >= $%d", paramCount))
|
|
args = append(args, *filter.DateFrom)
|
|
paramCount++
|
|
}
|
|
|
|
if filter.DateTo != nil {
|
|
conditions = append(conditions, fmt.Sprintf("date_created <= $%d", paramCount))
|
|
args = append(args, filter.DateTo.Add(24*time.Hour-time.Nanosecond))
|
|
paramCount++
|
|
}
|
|
|
|
return strings.Join(conditions, " AND "), args
|
|
}
|
|
|
|
func (h *OrderHandler) calculateMeta(limit, offset, total int) models.MetaResponse {
|
|
totalPages := 0
|
|
currentPage := 1
|
|
if limit > 0 {
|
|
totalPages = (total + limit - 1) / limit // Ceiling division
|
|
currentPage = (offset / limit) + 1
|
|
}
|
|
|
|
return models.MetaResponse{
|
|
Limit: limit,
|
|
Offset: offset,
|
|
Total: total,
|
|
TotalPages: totalPages,
|
|
CurrentPage: currentPage,
|
|
HasNext: offset+limit < total,
|
|
HasPrev: offset > 0,
|
|
}
|
|
}
|