feat: add search and pagination to tariff period services

internal/http/periode_tarif_detail.go

@@ -0,0 +1,118 @@
+package http
+
+import (
+	"errors"
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+
+	"primaya-api/cpone-middleware/internal/repository"
+)
+
+const periodeTarifLayananPerPage = 20
+
+type PeriodeTarifLayananPaginationResponse struct {
+	CurrentPage  int                              `json:"current_page"`
+	Data         []repository.PeriodeTarifLayanan `json:"data"`
+	FirstPageURL string                           `json:"first_page_url"`
+	From         *int                             `json:"from"`
+	LastPage     int                              `json:"last_page"`
+	LastPageURL  string                           `json:"last_page_url"`
+	Links        map[string]any                   `json:"links"`
+	NextPageURL  *string                          `json:"next_page_url"`
+	Total        int                              `json:"total"`
+	PerPage      int                              `json:"per_page"`
+}
+
+func (h Handler) ListPeriodeTarifLayanan(w http.ResponseWriter, r *http.Request) {
+	rawID := strings.TrimSpace(r.PathValue("periodeTarifID"))
+	if rawID == "" {
+		rawID = strings.TrimSpace(r.PathValue("PeriodeTarifID"))
+	}
+	periodeTarifID, err := strconv.ParseInt(rawID, 10, 64)
+	if err != nil || periodeTarifID < 1 {
+		WriteJSON(w, http.StatusUnprocessableEntity, Response{
+			Success: false,
+			Message: "PeriodeTarifID harus berupa angka positif",
+			Data:    nil,
+		})
+		return
+	}
+
+	pageNumber := periodeTarifLayananPageNumber(r)
+	search := strings.TrimSpace(r.URL.Query().Get("search"))
+	page, err := h.periodeTarifDetailRepository(r.Context()).ListPeriodeTarifLayanan(r.Context(), repository.PeriodeTarifLayananListParams{
+		PeriodeTarifID: periodeTarifID,
+		Page:           pageNumber,
+		PerPage:        periodeTarifLayananPerPage,
+		Search:         search,
+	})
+	if errors.Is(err, repository.ErrTarifTableNotFound) {
+		WriteJSON(w, http.StatusNotFound, Response{
+			Success: false,
+			Message: "Tabel tarif tidak ditemukan: harga_layanan_" + strconv.FormatInt(periodeTarifID, 10),
+			Data:    nil,
+		})
+		return
+	}
+	if err != nil {
+		WriteJSON(w, http.StatusInternalServerError, Response{
+			Success: false,
+			Message: "internal server error",
+			Data:    nil,
+		})
+		return
+	}
+
+	if page.Items == nil {
+		page.Items = []repository.PeriodeTarifLayanan{}
+	}
+
+	lastPage := (page.Total + periodeTarifLayananPerPage - 1) / periodeTarifLayananPerPage
+	if lastPage < 1 {
+		lastPage = 1
+	}
+	var from *int
+	if len(page.Items) > 0 {
+		value := (pageNumber-1)*periodeTarifLayananPerPage + 1
+		from = &value
+	}
+	var nextPageURL *string
+	if pageNumber < lastPage {
+		value := periodeTarifLayananPageURL(r, pageNumber+1)
+		nextPageURL = &value
+	}
+
+	WriteJSON(w, http.StatusOK, PeriodeTarifLayananPaginationResponse{
+		CurrentPage: pageNumber, Data: page.Items, FirstPageURL: "", From: from,
+		LastPage: lastPage, LastPageURL: "", Links: map[string]any{},
+		NextPageURL: nextPageURL, Total: page.Total, PerPage: periodeTarifLayananPerPage,
+	})
+}
+
+func periodeTarifLayananPageNumber(r *http.Request) int {
+	page, err := strconv.Atoi(r.URL.Query().Get("page"))
+	if err != nil || page < 1 {
+		return 1
+	}
+	return page
+}
+
+func periodeTarifLayananPageURL(r *http.Request, page int) string {
+	scheme := "http"
+	if r.TLS != nil {
+		scheme = "https"
+	}
+	if forwarded := r.Header.Get("X-Forwarded-Proto"); forwarded != "" {
+		scheme = strings.TrimSpace(strings.Split(forwarded, ",")[0])
+	}
+	host := r.Host
+	if host == "" {
+		host = "localhost"
+	}
+	query := r.URL.Query()
+	query.Set("page", strconv.Itoa(page))
+	query.Set("per_page", strconv.Itoa(periodeTarifLayananPerPage))
+	return (&url.URL{Scheme: scheme, Host: host, Path: r.URL.Path, RawQuery: query.Encode()}).String()
+}