package main

import (
	"encoding/json"
	"os"
	"os/exec"
	"path/filepath"
	"runtime"
	"testing"
)

func TestReleaseWrapperPreservesNativeExitStatuses(t *testing.T) {
	if runtime.GOOS == "windows" {
		t.Skip("POSIX release entry point")
	}
	_, source, _, _ := runtime.Caller(0)
	root := filepath.Clean(filepath.Join(filepath.Dir(source), "../.."))
	realGit, err := exec.LookPath("git")
	if err != nil {
		t.Fatal(err)
	}
	wrapper, err := os.ReadFile(filepath.Join(root, "scripts/release"))
	if err != nil {
		t.Fatal(err)
	}
	for _, mode := range []struct {
		name    string
		status  int
		version string
	}{{"success", 0, "v1.2.3"}, {"invalid", 2, "invalid"}, {"rejected", 1, "v1.2.3"}, {"unknown", 3, "v1.2.3"}} {
		t.Run(mode.name, func(t *testing.T) {
			repository := filepath.Join(t.TempDir(), "source")
			clone := exec.Command(realGit, "clone", "--local", "--no-hardlinks", root, repository)
			if output, err := clone.CombinedOutput(); err != nil {
				t.Fatalf("clone: %v %s", err, output)
			}
			cliGitRun(t, repository, "config", "user.name", "ReleaseKit Test")
			cliGitRun(t, repository, "config", "user.email", "fixture@example.test")
			cliGitRun(t, repository, "config", "commit.gpgsign", "false")
			if err := os.WriteFile(filepath.Join(repository, "scripts/release"), wrapper, 0755); err != nil {
				t.Fatal(err)
			}
			if err := os.MkdirAll(filepath.Join(repository, "docs/releases"), 0700); err != nil {
				t.Fatal(err)
			}
			if err := os.WriteFile(filepath.Join(repository, "docs/releases/v1.2.3.md"), []byte("# ReleaseKit v1.2.3\n"), 0600); err != nil {
				t.Fatal(err)
			}
			profile := map[string]any{"product": "ReleaseKit", "checks": []map[string]any{{"args": []string{"sh", "-c", "true"}}}}
			content, _ := json.Marshal(profile)
			if err := os.WriteFile(filepath.Join(repository, "releasekit.json"), content, 0600); err != nil {
				t.Fatal(err)
			}
			cliGitRun(t, repository, "add", "--all")
			cliGitRun(t, repository, "commit", "-m", "prepare wrapper fixture")
			remote := filepath.Join(t.TempDir(), "origin.git")
			cliGitRun(t, repository, "init", "--bare", remote)
			cliGitRun(t, repository, "remote", "set-url", "origin", remote)
			cliGitRun(t, repository, "push", "origin", "HEAD:refs/heads/main")
			if mode.name == "rejected" {
				if err := os.WriteFile(filepath.Join(remote, "hooks/pre-receive"), []byte("#!/bin/sh\nexit 1\n"), 0755); err != nil {
					t.Fatal(err)
				}
			}
			if mode.name == "unknown" {
				bin := t.TempDir()
				marker := filepath.Join(bin, "push-started")
				shim := `#!/bin/sh
for arg do
 if [ "$arg" = push ]; then : > "$RELEASEKIT_TEST_PUSH_MARKER"; exit 1; fi
done
if [ -f "$RELEASEKIT_TEST_PUSH_MARKER" ]; then
 for arg do if [ "$arg" = ls-remote ]; then exit 128; fi; done
fi
exec "$RELEASEKIT_TEST_REAL_GIT" "$@"
`
				if err := os.WriteFile(filepath.Join(bin, "git"), []byte(shim), 0755); err != nil {
					t.Fatal(err)
				}
				t.Setenv("PATH", bin+string(os.PathListSeparator)+os.Getenv("PATH"))
				t.Setenv("RELEASEKIT_TEST_REAL_GIT", realGit)
				t.Setenv("RELEASEKIT_TEST_PUSH_MARKER", marker)
			}
			command := exec.Command("./scripts/release", mode.version)
			command.Dir = repository
			output, err := command.CombinedOutput()
			status := 0
			if err != nil {
				exit, ok := err.(*exec.ExitError)
				if !ok {
					t.Fatal(err)
				}
				status = exit.ExitCode()
			}
			if status != mode.status {
				t.Fatalf("status=%d want=%d output=%s", status, mode.status, output)
			}
		})
	}
}