Add optimized doctor search endpoint

internal/http/dokter.go

@@ -0,0 +1,103 @@
+package http
+
+import (
+	"net/http"
+	"strconv"
+	"strings"
+
+	"primaya-api/cpone-middleware/internal/repository"
+)
+
+const (
+	defaultDokterPerPage = 15
+	maxDokterPerPage     = 100
+)
+
+type DokterPaginationResponse struct {
+	CurrentPage  int                 `json:"current_page"`
+	Data         []repository.Dokter `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) ListDokter(w http.ResponseWriter, r *http.Request) {
+	page := parseDokterPage(r.URL.Query().Get("page"))
+	perPage := parseDokterPerPage(r.URL.Query().Get("per_page"))
+
+	doctorIDs := queryValues(r, "DokterID_in", "DokterID_in[]")
+	doctorIDs = splitDoctorIDs(doctorIDs)
+
+	result, err := h.dokterRepository(r.Context()).ListDokter(r.Context(), repository.DokterListParams{
+		Search: strings.TrimSpace(r.URL.Query().Get("search")), DoctorIDs: doctorIDs,
+		Page: page, PerPage: perPage,
+	})
+	if err != nil {
+		WriteJSON(w, http.StatusInternalServerError, Response{Success: false, Message: "internal server error", Data: nil})
+		return
+	}
+
+	lastPage := (result.Total + perPage - 1) / perPage
+	if lastPage < 1 {
+		lastPage = 1
+	}
+	var from *int
+	if len(result.Items) > 0 {
+		value := (page-1)*perPage + 1
+		from = &value
+	}
+	var nextPageURL *string
+	if page < lastPage {
+		value := currentRequestURL(r, page+1)
+		nextPageURL = &value
+	}
+
+	WriteJSON(w, http.StatusOK, DokterPaginationResponse{
+		CurrentPage: page, Data: result.Items, FirstPageURL: "", From: from,
+		LastPage: lastPage, LastPageURL: "", Links: map[string]any{},
+		NextPageURL: nextPageURL, Total: result.Total, PerPage: perPage,
+	})
+}
+
+func parseDokterPage(raw string) int {
+	value, err := strconv.Atoi(raw)
+	if err != nil || value < 1 {
+		return 1
+	}
+	return value
+}
+
+func parseDokterPerPage(raw string) int {
+	value, err := strconv.Atoi(raw)
+	if err != nil || value < 1 {
+		return defaultDokterPerPage
+	}
+	if value > maxDokterPerPage {
+		return maxDokterPerPage
+	}
+	return value
+}
+
+func splitDoctorIDs(values []string) []string {
+	seen := make(map[string]struct{}, len(values))
+	result := make([]string, 0, len(values))
+	for _, value := range values {
+		for _, part := range strings.Split(value, ",") {
+			part = strings.TrimSpace(part)
+			if part == "" {
+				continue
+			}
+			if _, exists := seen[part]; exists {
+				continue
+			}
+			seen[part] = struct{}{}
+			result = append(result, part)
+		}
+	}
+	return result
+}