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package release

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

	"custard/internal/gitread"
)

func TestReleaseSourceAndPrefix(t *testing.T) {
	var c RepoConfig
	if got := c.ReleaseSource(); got != SourceTag {
		t.Errorf("default ReleaseSource = %q, want %q", got, SourceTag)
	}
	if got := c.Prefix(); got != "release/" {
		t.Errorf("default Prefix = %q, want release/", got)
	}
	c.Brew.Source = "bookmark"
	c.Brew.BookmarkPrefix = "rel/"
	if got := c.ReleaseSource(); got != SourceBookmark {
		t.Errorf("ReleaseSource = %q, want %q", got, SourceBookmark)
	}
	if got := c.Prefix(); got != "rel/" {
		t.Errorf("Prefix = %q, want rel/", got)
	}
}

func TestBookmarkVersion(t *testing.T) {
	cases := []struct {
		short, prefix, want string
		ok                  bool
	}{
		{"release/v1.2.3", "release/", "v1.2.3", true},
		{"rel/v0.1.0", "rel/", "v0.1.0", true},
		{"release/v1.2.3", "rel/", "", false},     // wrong prefix
		{"release/main", "release/", "", false},   // not semver
		{"main", "release/", "", false},           // no prefix
		{"release/v1.2", "release/", "", false},   // not 3-part
	}
	for _, c := range cases {
		got, ok := BookmarkVersion(c.short, c.prefix)
		if ok != c.ok || got != c.want {
			t.Errorf("BookmarkVersion(%q,%q) = %q,%v; want %q,%v", c.short, c.prefix, got, ok, c.want, c.ok)
		}
	}
}

func gitRun(t *testing.T, dir string, args ...string) {
	t.Helper()
	c := exec.Command("git", args...)
	c.Dir = dir
	c.Env = append(c.Environ(),
		"GIT_AUTHOR_NAME=t", "GIT_AUTHOR_EMAIL=t@x", "GIT_AUTHOR_DATE=2026-01-01T00:00:00",
		"GIT_COMMITTER_NAME=t", "GIT_COMMITTER_EMAIL=t@x", "GIT_COMMITTER_DATE=2026-01-01T00:00:00")
	if out, err := c.CombinedOutput(); err != nil {
		t.Fatalf("git %v: %v: %s", args, err, out)
	}
}

// TestPublishArchivesBranchRef verifies bookmark mode: archive the release
// BRANCH while naming the tarball/formula by the VERSION.
func TestPublishArchivesBranchRef(t *testing.T) {
	root := t.TempDir()
	work := filepath.Join(root, "work")
	gitRun(t, root, "init", "-q", "-b", "main", "work")
	if err := os.WriteFile(filepath.Join(work, "go.mod"), []byte("module proj\n"), 0o644); err != nil {
		t.Fatal(err)
	}
	gitRun(t, work, "add", ".")
	gitRun(t, work, "commit", "-q", "-m", "init")
	gitRun(t, work, "checkout", "-q", "-b", "release/v1.2.3")
	gitRun(t, work, "commit", "-q", "--allow-empty", "-m", "ship v1.2.3")
	gitRun(t, work, "checkout", "-q", "main")
	gitRun(t, work, "clone", "-q", "--bare", work, filepath.Join(root, "proj.git"))

	// A bare tap repo to receive the formula.
	tap := filepath.Join(root, "homebrew-tap.git")
	gitRun(t, root, "init", "-q", "--bare", "homebrew-tap.git")
	// Seed the tap with one commit so HEAD exists for cloning.
	tapWork := filepath.Join(root, "tapwork")
	gitRun(t, root, "clone", "-q", "homebrew-tap.git", "tapwork")
	if err := os.WriteFile(filepath.Join(tapWork, "README"), []byte("tap\n"), 0o644); err != nil {
		t.Fatal(err)
	}
	gitRun(t, tapWork, "add", ".")
	gitRun(t, tapWork, "commit", "-q", "-m", "seed")
	gitRun(t, tapWork, "push", "-q", "origin", "HEAD:master")

	dl := filepath.Join(root, "dl")
	ver, err := Publish(Options{
		Store:     gitread.New(root),
		ReposPath: root,
		DLPath:    dl,
		TapRepo:   "homebrew-tap",
		BaseURL:   "https://example.test",
		Repo:      "proj",
		Ref:       "release/v1.2.3", // archive the branch
		Tag:       "v1.2.3",         // version
		Desc:      "a thing",
		Package:   ".",
	})
	if err != nil {
		t.Fatalf("Publish: %v", err)
	}
	if ver != "1.2.3" {
		t.Errorf("ver = %q, want 1.2.3", ver)
	}
	if _, err := os.Stat(filepath.Join(dl, "proj-1.2.3.tar.gz")); err != nil {
		t.Errorf("tarball not written: %v", err)
	}
	_ = tap
}

func TestPublishDefaultsRefToTag(t *testing.T) {
	// With Ref empty, Publish must archive Tag (tag-mode back-compat). A bogus
	// repo path makes git archive fail; assert the error names the tag, proving
	// Tag was used as the archive ref.
	_, err := Publish(Options{
		Store: gitread.New(t.TempDir()), ReposPath: t.TempDir(), DLPath: t.TempDir(),
		Repo: "nope", Tag: "v9.9.9",
	})
	if err == nil || !strings.Contains(err.Error(), "v9.9.9") {
		t.Fatalf("expected archive error naming v9.9.9, got %v", err)
	}
}