package main

import (
	"os"
	"os/exec"
	"path/filepath"
	"runtime"
	"strings"
	"testing"

	"gitea.maximumdirect.net/eric/ReleaseKit/cmd/releasekit/internal/cli"
)

func TestReleaseKitSourceDeliveryWorkflowFromTaggedCheckout(t *testing.T) {
	_, sourceFile, _, ok := runtime.Caller(0)
	if !ok {
		t.Fatal("locate integration test source")
	}
	root := filepath.Clean(filepath.Join(filepath.Dir(sourceFile), "../.."))
	profile, err := cli.LoadSettings(root, "")
	if err != nil {
		t.Fatalf("load ReleaseKit source-only profile: %v", err)
	}
	if profile.Build != nil && len(profile.Build.Targets) != 0 {
		t.Fatalf("ReleaseKit profile declares binary targets: %#v", profile.Build.Targets)
	}
	if profile.Delivery == nil || profile.Delivery.BaseURL != "https://gitea.maximumdirect.net" || profile.Delivery.Owner != "eric" || profile.Delivery.Repository != "ReleaseKit" || profile.Delivery.TokenEnv != "RELEASEKIT_GITEA_TOKEN" {
		t.Fatalf("ReleaseKit delivery profile = %#v", profile.Delivery)
	}
	repository := filepath.Join(t.TempDir(), "tagged ReleaseKit")
	clone := exec.Command("git", "clone", "--local", "--no-hardlinks", root, repository)
	if output, err := clone.CombinedOutput(); err != nil {
		t.Fatalf("clone ReleaseKit source: %v\n%s", err, output)
	}
	cliGitRun(t, repository, "config", "user.name", "ReleaseKit Test")
	cliGitRun(t, repository, "config", "user.email", "releasekit@example.test")

	const version = "v1.2.3"
	note := "# ReleaseKit v1.2.3\n\nSource-only delivery fixture.\n\n" +
		"[COPYRIGHT](https://gitea.maximumdirect.net/eric/ReleaseKit/src/tag/v1.2.3/COPYRIGHT) |\n" +
		"[LICENSE](https://gitea.maximumdirect.net/eric/ReleaseKit/src/tag/v1.2.3/LICENSE) |\n" +
		"[ATTRIBUTION](https://gitea.maximumdirect.net/eric/ReleaseKit/src/tag/v1.2.3/docs/oss/attribution.md)\n"
	notePath := filepath.Join(repository, "docs", "releases", version+".md")
	if err := os.MkdirAll(filepath.Dir(notePath), 0o700); err != nil {
		t.Fatal(err)
	}
	if err := os.WriteFile(notePath, []byte(note), 0o600); err != nil {
		t.Fatal(err)
	}
	ignore, err := os.OpenFile(filepath.Join(repository, ".gitignore"), os.O_APPEND|os.O_WRONLY, 0)
	if err != nil {
		t.Fatal(err)
	}
	if _, err := ignore.WriteString("\n/.releasekit/\n"); err != nil {
		t.Fatal(err)
	}
	if err := ignore.Close(); err != nil {
		t.Fatal(err)
	}
	cliGitRun(t, repository, "add", "docs/releases/"+version+".md", ".gitignore")
	cliGitRun(t, repository, "commit", "-m", "prepare source-only delivery")

	state := &deliveryServerState{product: "ReleaseKit"}
	server := newDeliveryServer(t, state)
	defer server.Close()
	writeDeliveryProfile(t, repository, cli.Settings{
		Product:  "ReleaseKit",
		Delivery: &cli.DeliverySettings{BaseURL: server.URL, Owner: "owner", Repository: "example"},
	})
	state.commit = cliGitOutput(t, repository, "rev-parse", "HEAD")
	cliGitRun(t, repository, "tag", "-a", version, "-m", "ReleaseKit v1.2.3")

	remote := filepath.Join(t.TempDir(), "origin.git")
	initRemote := exec.Command("git", "init", "--bare", remote)
	if output, err := initRemote.CombinedOutput(); err != nil {
		t.Fatalf("initialize local delivery remote: %v\n%s", err, output)
	}
	cliGitRun(t, repository, "remote", "set-url", "origin", remote)
	cliGitRun(t, repository, "push", "origin", "HEAD:refs/heads/main", "refs/tags/"+version)

	// Match the maintained workflow: fetch and bind the tag, then build the
	// executable from that detached tagged checkout before page-only delivery.
	cliGitRun(t, repository, "fetch", "origin", "refs/tags/"+version+":refs/tags/"+version)
	if got := cliGitOutput(t, repository, "rev-parse", "refs/tags/"+version+"^{commit}"); got != state.commit {
		t.Fatalf("fetched tag commit = %s, want %s", got, state.commit)
	}
	cliGitRun(t, repository, "checkout", "--detach", state.commit)
	tool := filepath.Join(repository, ".releasekit", "bin", "releasekit")
	if err := os.MkdirAll(filepath.Dir(tool), 0o700); err != nil {
		t.Fatal(err)
	}
	build := exec.Command("go", "build", "-o", tool, "./cmd/releasekit")
	build.Dir = repository
	build.Env = append(os.Environ(), "GOTOOLCHAIN=local", "GOPROXY=off", "GOSUMDB=off")
	if output, err := build.CombinedOutput(); err != nil {
		t.Fatalf("build CLI from tagged checkout: %v\n%s", err, output)
	}

	state.remoteCommit = strings.Repeat("f", 40)
	failure := exec.Command(tool, "deliver", "--repo", repository, version)
	failure.Dir = repository
	failure.Env = append(os.Environ(), "RELEASEKIT_GITEA_TOKEN=fixture-token")
	if output, err := failure.CombinedOutput(); err == nil {
		t.Fatalf("delivery with a mismatched hosted tag succeeded: %s", output)
	}
	if state.releaseCreates != 0 || cliGitOutput(t, repository, "rev-parse", "refs/tags/"+version+"^{commit}") != state.commit {
		t.Fatal("delivery failure changed hosted release state or source tag")
	}
	state.remoteCommit = ""

	for attempt := 0; attempt < 2; attempt++ {
		output := runWoodpeckerCommand(t, tool, repository, true, "deliver", "--repo", repository, version)
		if !strings.Contains(output, "state complete") {
			t.Fatalf("delivery attempt %d output = %q", attempt+1, output)
		}
	}
	if state.releaseCreates != 1 || state.assetUploads != 0 || state.assetListReads != 0 {
		t.Fatalf("page-only workflow calls = creates:%d uploads:%d asset reads:%d", state.releaseCreates, state.assetUploads, state.assetListReads)
	}
	if state.noteBody != note {
		t.Fatalf("hosted note body = %q, want complete note %q", state.noteBody, note)
	}
	if got := cliGitOutput(t, repository, "rev-parse", "refs/tags/"+version+"^{commit}"); got != state.commit {
		t.Fatalf("source tag moved after delivery: %s, want %s", got, state.commit)
	}
	if status := cliGitOutput(t, repository, "status", "--porcelain"); status != "" {
		t.Fatalf("tagged checkout became dirty after delivery: %s", status)
	}
}