package main

import (
	"net/http"
	"net/http/httptest"
	"strings"
	"testing"
	"time"
)

func TestCheckBotNeedsPushAccess(t *testing.T) {
	push := false
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if r.Header.Get("Authorization") != "token secret" {
			w.WriteHeader(http.StatusUnauthorized)
			return
		}
		switch r.URL.Path {
		case "/api/v1/user":
			w.Write([]byte(`{"login":"git_ai_bot","email":"bot@example.com"}`))
		case "/api/v1/repos/org/games":
			if push {
				w.Write([]byte(`{"permissions":{"push":true}}`))
			} else {
				w.Write([]byte(`{"permissions":{"push":false}}`))
			}
		default:
			w.WriteHeader(http.StatusNotFound)
		}
	}))
	defer srv.Close()

	c := &workerConfig{gitea: srv.URL, repo: "org/games", botToken: "secret"}
	if err := c.checkBot(); err == nil || !strings.Contains(err.Error(), "git_ai_bot can't push to org/games") {
		t.Errorf("read-only bot: got %v", err)
	}
	push = true
	if err := c.checkBot(); err != nil {
		t.Fatal(err)
	}
	if c.botLogin != "git_ai_bot" || c.botEmail != "bot@example.com" {
		t.Errorf("identity = %s <%s>", c.botLogin, c.botEmail)
	}
	c.botToken = "wrong"
	if err := c.checkBot(); err == nil || !strings.Contains(err.Error(), "GITEA_TOKEN") {
		t.Errorf("bad token: got %v", err)
	}
}

func TestCheckBotWithRepositoryOnlyToken(t *testing.T) {
	// Gitea answers /user with 403 when the token only has repository scope
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		switch r.URL.Path {
		case "/api/v1/user":
			w.WriteHeader(http.StatusForbidden)
			w.Write([]byte(`{"message":"token does not have at least one of required scope(s), required=[read:user]"}`))
		case "/api/v1/repos/org/games":
			w.Write([]byte(`{"permissions":{"push":true}}`))
		}
	}))
	defer srv.Close()

	t.Setenv("BOT_NAME", "gbr-bot")
	c := &workerConfig{gitea: srv.URL, repo: "org/games", botToken: "secret"}
	if err := c.checkBot(); err != nil {
		t.Fatal(err)
	}
	if c.botLogin != "gbr-bot" || c.botEmail != "gbr-bot@users.noreply" {
		t.Errorf("identity = %s <%s>", c.botLogin, c.botEmail)
	}
}

func TestDraftBranchIsNewForEveryRun(t *testing.T) {
	first := draftBranch("example", "4b174b2d", time.Date(2026, 10, 25, 21, 30, 0, 0, time.UTC))
	rerun := draftBranch("example", "4b174b2d", time.Date(2026, 10, 25, 22, 5, 9, 0, time.UTC))
	if first != "draft/example-4b174b2d-20261025-213000" || first == rerun {
		t.Errorf("first %q, rerun %q", first, rerun)
	}
}