package app

import (
	"encoding/json"
	"net/http"
)

var apiEndpointHandlers = map[string]func(w http.ResponseWriter, r *http.Request){
	"me": httpHandleAPIMe,
}

func httpBaseHandleAPI(w http.ResponseWriter, r *http.Request, path []string) bool {
	if path[0] != "api" || len(path) < 2 {
		return false
	}
	handler := apiEndpointHandlers[path[1]]
	if handler == nil {
		return false
	}
	handler(w, r)
	return true
}

func httpHandleJSONError(w http.ResponseWriter, err error) {
	w.Header().Add("Content-Type", "application/json")
	statusCode := getErrorHttpStatusCode(err)
	w.WriteHeader(statusCode)
	w.Write([]byte("{\"success\": false}"))
}

func httpHandleJSON(w http.ResponseWriter, data any) {
	out, err := json.Marshal(data)
	if err != nil {
		httpHandleJSONError(w, err)
		return
	}
	w.Header().Add("Content-Type", "application/json")
	w.WriteHeader(http.StatusOK)
	w.Write(out)
}

func httpHandleAPIMe(w http.ResponseWriter, r *http.Request) {
	clientID := getUserClientID(r)
	user, err := getCurrentUserFromSession(r)
	if err == nil {
		httpHandleJSON(w, map[string]any{
			"success":         true,
			"client_id":       clientID,
			"user_id":         user.ID,
			"user_name":       user.Username,
			"user_created_at": user.CreatedAt,
		})
		return
	}
	httpHandleJSON(w, map[string]any{
		"success":         true,
		"client_id":       clientID,
		"user_id":         nil,
		"user_name":       nil,
		"user_created_at": nil,
	})
}