chore: adding api(get) districs in examples

examples/api-go/handlers/districts_handler.go

@@ -0,0 +1,95 @@
+package handlers
+
+import (
+	"net/http"
+	"strconv"
+
+	"github.com/gin-gonic/gin"
+	"github.com/yuefii/NusantaraKita/examples/api-go/dtos"
+	"github.com/yuefii/NusantaraKita/examples/api-go/models"
+)
+
+func (handler *Handler) GetDistricts(ctx *gin.Context) {
+	var district []models.Districts
+	var totalItems int64
+
+	showAll := ctx.Query("show_all") == "true"
+	pageStr := ctx.Query("page")
+	perPageStr := ctx.Query("per_page")
+
+	page := 1
+	perPage := 10
+
+	if pageStr != "" {
+		if p, err := strconv.Atoi(pageStr); err == nil && p > 0 {
+			page = p
+		}
+	}
+
+	if perPageStr != "" {
+		if pp, err := strconv.Atoi(perPageStr); err == nil && pp > 0 {
+			perPage = pp
+		}
+	}
+
+	if showAll {
+
+		result := handler.db.Find(&district)
+		if result.Error != nil {
+			ctx.JSON(http.StatusInternalServerError, gin.H{"error": result.Error.Error()})
+			return
+		}
+		totalItems = int64(len(district))
+
+		var districtDTOs []dtos.ApiDTO
+		for _, response := range district {
+			districtDTOs = append(districtDTOs, dtos.ApiDTO{
+				Code: response.Code,
+				Name: response.Name,
+			})
+		}
+
+		response := gin.H{
+			"data": districtDTOs,
+		}
+
+		ctx.JSON(http.StatusOK, response)
+		return
+	}
+
+	result := handler.db.Model(&models.Districts{}).Count(&totalItems)
+	if result.Error != nil {
+		ctx.JSON(http.StatusInternalServerError, gin.H{"error": result.Error.Error()})
+		return
+	}
+
+	result = handler.db.Offset((page - 1) * perPage).Limit(perPage).Find(&district)
+	if result.Error != nil {
+		ctx.JSON(http.StatusInternalServerError, gin.H{"error": result.Error.Error()})
+		return
+	}
+
+	var districtDTOs []dtos.ApiDTO
+	for _, response := range district {
+		districtDTOs = append(districtDTOs, dtos.ApiDTO{
+			Code: response.Code,
+			Name: response.Name,
+		})
+	}
+
+	totalPages := int(totalItems) / perPage
+	if int(totalItems)%perPage != 0 {
+		totalPages++
+	}
+
+	response := dtos.ResponseDTO{
+		Data: districtDTOs,
+		Pagination: dtos.PaginationDTO{
+			CurrentPage: page,
+			PerPage:     perPage,
+			TotalItems:  int(totalItems),
+			TotalPages:  totalPages,
+		},
+	}
+	ctx.JSON(http.StatusOK, response)
+}

examples/api-go/models/districts.go

@@ -0,0 +1,7 @@
+package models
+
+type Districts struct {
+	Code        string `gorm:"column:code"`
+	RegencyCode string `gorm:"column:regency_code"`
+	Name        string `gorm:"column:name"`
+}

examples/api-go/routes/router.go

@@ -11,4 +11,5 @@ func SetupRoutes(router *gin.Engine, db *gorm.DB) {
 
 	router.GET("/api/provinces", handler.GetProvinces)
 	router.GET("/api/regencies", handler.GetRegencies)
+	router.GET("api/districts", handler.GetDistricts)
 }