Initial CPONE middleware implementation

internal/http/handler.go

@@ -0,0 +1,134 @@
+package http
+
+import (
+	"context"
+	"errors"
+	"net/http"
+	"regexp"
+	"strings"
+
+	"primaya-api/cpone-middleware/internal/repository"
+)
+
+var digitsOnly = regexp.MustCompile(`^\d+$`)
+
+type LayananRepository interface {
+	MappingHarga(ctx context.Context, params repository.MappingHargaParams) ([]repository.TarifLayanan, error)
+}
+
+type Handler struct {
+	repo LayananRepository
+}
+
+func NewHandler(repo LayananRepository) Handler {
+	return Handler{repo: repo}
+}
+
+func (h Handler) MappingHarga(w http.ResponseWriter, r *http.Request) {
+	layananIDs := parseLayananIDs(r)
+	if len(layananIDs) == 0 {
+		WriteJSON(w, http.StatusUnprocessableEntity, Response{
+			Success: false,
+			Message: "Parameter layananID wajib diisi dan dapat berupa satu atau beberapa LayananID",
+			Data:    nil,
+		})
+		return
+	}
+
+	periodeTarifID, ok := firstQueryValue(r, "periodeTarifID", "periode_tarif_id")
+	if !ok || strings.TrimSpace(periodeTarifID) == "" {
+		WriteJSON(w, http.StatusUnprocessableEntity, Response{
+			Success: false,
+			Message: "Parameter periodeTarifID wajib diisi",
+			Data:    nil,
+		})
+		return
+	}
+
+	periodeTarifID = strings.TrimSpace(periodeTarifID)
+	if !digitsOnly.MatchString(periodeTarifID) {
+		WriteJSON(w, http.StatusUnprocessableEntity, Response{
+			Success: false,
+			Message: "Parameter periodeTarifID harus berupa angka",
+			Data:    nil,
+		})
+		return
+	}
+
+	rows, err := h.repo.MappingHarga(r.Context(), repository.MappingHargaParams{
+		PeriodeTarifID: periodeTarifID,
+		LayananIDs:     layananIDs,
+		Search:         strings.TrimSpace(r.URL.Query().Get("search")),
+	})
+	if err != nil {
+		if errors.Is(err, repository.ErrTarifTableNotFound) {
+			WriteJSON(w, http.StatusNotFound, Response{
+				Success: false,
+				Message: "Tabel tarif dasar tidak ditemukan: harga_layanan_" + periodeTarifID,
+				Data:    nil,
+			})
+			return
+		}
+
+		WriteJSON(w, http.StatusInternalServerError, Response{
+			Success: false,
+			Message: "internal server error",
+			Data:    nil,
+		})
+		return
+	}
+
+	WriteJSON(w, http.StatusOK, Response{
+		Success: true,
+		Message: "ok",
+		Data: MappingHargaData{
+			PeriodeTarifID: periodeTarifID,
+			DetailLayanan:  rows,
+		},
+	})
+}
+
+func parseLayananIDs(r *http.Request) []string {
+	values := queryValues(r, "layananID", "layananID[]")
+	if len(values) == 0 {
+		values = queryValues(r, "layanan_id", "layanan_id[]")
+	}
+
+	seen := make(map[string]struct{}, len(values))
+	ids := make([]string, 0, len(values))
+
+	for _, value := range values {
+		for _, part := range strings.Split(value, ",") {
+			id := strings.TrimSpace(part)
+			if id == "" {
+				continue
+			}
+			if _, exists := seen[id]; exists {
+				continue
+			}
+			seen[id] = struct{}{}
+			ids = append(ids, id)
+		}
+	}
+
+	return ids
+}
+
+func queryValues(r *http.Request, keys ...string) []string {
+	query := r.URL.Query()
+	values := make([]string, 0)
+	for _, key := range keys {
+		values = append(values, query[key]...)
+	}
+	return values
+}
+
+func firstQueryValue(r *http.Request, keys ...string) (string, bool) {
+	query := r.URL.Query()
+	for _, key := range keys {
+		if values, exists := query[key]; exists && len(values) > 0 {
+			return values[0], true
+		}
+	}
+	return "", false
+}