109 lines
3.5 KiB
Go
109 lines
3.5 KiB
Go
package greet
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import (
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"context"
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"encoding/json"
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"net/http"
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"github.com/go-chi/chi/v5"
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"github.com/rs/zerolog/log"
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)
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// GreetResponse represents a greeting response
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// @Description GreetResponse represents a greeting response with a message
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// @Property message string "The greeting message" example("Hello John!")
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type GreetResponse struct {
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Message string `json:"message" example:"Hello John!"`
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}
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// GreetRequest represents a greeting request
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// @Description GreetRequest represents a request with a name to greet
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// @Property name string "The name to greet" example("John")
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type GreetRequest struct {
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Name string `json:"name" example:"John"`
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}
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// ErrorResponse represents an error response
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// @Description ErrorResponse represents an error response
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type ErrorResponse struct {
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Error string `json:"error" example:"invalid_request"`
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Message string `json:"message" example:"Invalid name parameter"`
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}
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// GreetResponseV2 represents a v2 greeting response
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// @Description GreetResponseV2 represents a v2 greeting response
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type GreetResponseV2 struct {
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Message string `json:"message" example:"Hello my friend John!"`
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}
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// ValidationError represents a validation error response
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// @Description ValidationError represents a validation error with details
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type ValidationError struct {
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Error string `json:"error" example:"validation_failed"`
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Message string `json:"message" example:"Invalid request data"`
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Details []ValidationDetail `json:"details,omitempty"`
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}
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// ValidationDetail represents a single validation error detail
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// @Description ValidationDetail represents a single field validation error
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type ValidationDetail struct {
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Field string `json:"field" example:"name"`
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Error string `json:"error" example:"must be <= 100 characters"`
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}
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type Greeter interface {
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Greet(ctx context.Context, name string) string
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}
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type ApiV1Greet interface {
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RegisterRoutes(router chi.Router)
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}
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type apiV1GreetHandler struct {
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greeter Greeter
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}
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func NewApiV1GreetHandler(greeter Greeter) ApiV1Greet {
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return &apiV1GreetHandler{greeter: greeter}
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}
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func (h *apiV1GreetHandler) RegisterRoutes(router chi.Router) {
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log.Trace().Msg("Registering greet routes")
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router.Get("/", h.handleGreetQuery)
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router.Get("/{name}", h.handleGreetPath)
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log.Trace().Msg("Greet routes registered")
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}
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// handleGreetQuery godoc
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// @Summary Get default greeting
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// @Description Returns a default greeting message
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// @Tags API/v1/Greeting
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// @Accept json
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// @Produce json
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// @Success 200 {object} GreetResponse "Successful response"
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// @Router /v1/greet [get]
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func (h *apiV1GreetHandler) handleGreetQuery(w http.ResponseWriter, r *http.Request) {
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name := r.URL.Query().Get("name")
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h.writeJSONResponse(w, h.greeter.Greet(r.Context(), name))
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}
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// handleGreetPath godoc
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// @Summary Get personalized greeting
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// @Description Returns a greeting with the specified name
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// @Tags API/v1/Greeting
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// @Accept json
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// @Produce json
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// @Param name path string true "Name to greet"
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// @Success 200 {object} GreetResponse "Successful response"
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// @Failure 400 {object} ErrorResponse "Invalid name parameter"
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// @Router /v1/greet/{name} [get]
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func (h *apiV1GreetHandler) handleGreetPath(w http.ResponseWriter, r *http.Request) {
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name := chi.URLParam(r, "name")
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h.writeJSONResponse(w, h.greeter.Greet(r.Context(), name))
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}
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func (h *apiV1GreetHandler) writeJSONResponse(w http.ResponseWriter, message string) {
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w.Header().Set("Content-Type", "application/json")
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json.NewEncoder(w).Encode(map[string]string{"message": message})
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}
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