// SPDX-FileCopyrightText: 2023 Olivier Charvin
// SPDX-License-Identifier: CC0-1.0

package main

import (
	"encoding/json"
	"fmt"
	"io"
	"net/http"
	"net/http/httptest"
	"os"
	"testing"

	"github.com/sethvargo/go-githubactions"
)

func TestRun(t *testing.T) {
	s := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		switch r.URL.Path {
		default:
			msg := fmt.Sprintf("unexpected request on %s", r.URL.Path)
			http.Error(w, msg, http.StatusBadRequest)
			t.Error(msg)
		case "/auth/time":
		case "/domain/zone/FAKEVALUE-INPUT_DOMAIN/record/FAKEVALUE-INPUT_RECORD-ID":
			buf, err := io.ReadAll(r.Body)
			if err != nil {
				msg := fmt.Sprintf("could not read request body: %v", err)
				http.Error(w, msg, http.StatusBadRequest)
				t.Error(msg)
			}
			if string(buf) != `{"subDomain":"FAKEVALUE-INPUT_SUBDOMAIN","target":"\"FAKEVALUE-INPUT_VALUE\""}` {
				msg := fmt.Sprintf("unexpected body: %s", string(buf))
				http.Error(w, msg, http.StatusBadRequest)
				t.Error(msg)
			}
		}
	}))
	t.Cleanup(s.Close)
	action := githubactions.New(githubactions.WithGetenv(func(key string) string {
		switch key {
		case "INPUT_OVH-ENDPOINT":
			return "http://" + s.Listener.Addr().String()
		}
		return "FAKEVALUE-" + key
	}))
	err := run(action)
	if err != nil {
		t.Fatal(err)
	}

	// for action testing (see .forgejo/workflows/pr.yml)
	if os.Getenv("ACTION_TESTING") == "1" {
		s := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
			switch r.URL.Path {
			default:
				msg := fmt.Sprintf("unexpected request on %s", r.URL.Path)
				http.Error(w, msg, http.StatusBadRequest)
				t.Error(msg)
				return
			case "/auth/time":
			case "/domain/zone/example.org/record/12345":
				var body struct {
					SubDomain string `json:"subDomain"`
					Target    string `json:"target"`
				}
				err := json.NewDecoder(r.Body).Decode(&body)
				if err != nil {
					msg := fmt.Sprintf("could not decode request body: %v", err)
					http.Error(w, msg, http.StatusBadRequest)
					t.Error(msg)
					return
				}
				if body.SubDomain != "_release" {
					msg := fmt.Sprintf("unexpected subdomain: %s", body.SubDomain)
					http.Error(w, msg, http.StatusBadRequest)
					t.Error(msg)
					return
				}
				err = os.WriteFile("dns.txt", []byte(body.Target), 0o644)
				if err != nil {
					msg := fmt.Sprintf("could write dns.txt: %v", err)
					http.Error(w, msg, http.StatusInternalServerError)
					t.Error(msg)
					return
				}
			}
		}))
		t.Cleanup(s.Close)
		githubactions.SetOutput("OVH_ENDPOINT", "http://"+s.Listener.Addr().String())
		err = os.Remove("delete_me_when_ready")
		if err != nil {
			t.Fatal(err)
		}
		select {}
	}
}