45 lines
1.3 KiB
Go
45 lines
1.3 KiB
Go
package handlers
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import (
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"encoding/json"
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"errors"
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"net/http"
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"github.com/fish/language/backend/internal/services"
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"github.com/jackc/pgx/v5"
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)
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// RespondJSON writes a JSON response with the given status code.
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func RespondJSON(w http.ResponseWriter, status int, data any) {
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(status)
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_ = json.NewEncoder(w).Encode(data)
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}
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// RespondSuccess returns the common success envelope.
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func RespondSuccess(w http.ResponseWriter, data any) {
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RespondJSON(w, http.StatusOK, modelsAPIResponse{Code: 0, Message: "ok", Data: data})
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}
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// RespondError returns the common error envelope.
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func RespondError(w http.ResponseWriter, status int, code int, message string) {
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RespondJSON(w, status, modelsAPIResponse{Code: code, Message: message, Data: nil})
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}
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// MapError maps repository/ service errors to HTTP status and code.
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func MapError(err error) (status int, code int, message string) {
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if errors.Is(err, pgx.ErrNoRows) {
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return http.StatusNotFound, 10001, "resource not found"
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}
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if errors.Is(err, services.ErrCategoryNotEmpty) {
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return http.StatusConflict, 10005, "category has words and cannot be deleted"
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}
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return http.StatusInternalServerError, 10000, "internal server error"
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}
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type modelsAPIResponse struct {
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Code int `json:"code"`
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Message string `json:"message"`
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Data any `json:"data"`
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}
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