package e2e

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

func docFixture(h *harness, t *testing.T) {
	t.Helper()
	h.write(t, "skills/good-skill/SKILL.md", "---\nname: Good Skill\ndescription: works\n---\n# Good\n")
	h.write(t, "agents/scout.md", "---\ndescription: a real agent\n---\nbody\n")
	h.write(t, "agents/SCHEMA.md", "# Schema\npure documentation, no frontmatter\n")
	h.write(t, "commands/review.md", "---\nargument-hint: [files]\n---\nbody\n")
	h.write(t, "commands/README.md", "Documentation for the commands directory.\n")
	h.commitUpstream(t, "fixture with documentation files")
}

func TestVendorAddSkipsDocMarkdownWithWarning(t *testing.T) {
	h := newHarness(t)
	docFixture(h, t)

	out := h.mustRun(t, "vendor", "add", "superpowers", h.upstreamDir)
	if !contains(out, "agents/SCHEMA.md: no agent frontmatter, skipped") {
		t.Errorf("add report must warn about skipped SCHEMA.md:\n%s", out)
	}
	if !contains(out, "commands/README.md: no command frontmatter, skipped") {
		t.Errorf("add report must warn about skipped README.md:\n%s", out)
	}

	lock := readFile(t, filepath.Join(h.workDir, "agent-lib.lock.json"))
	if !contains(lock, "agents/SCHEMA.md: no agent frontmatter, skipped") {
		t.Errorf("lockfile warnings must record the skip:\n%s", lock)
	}
	for _, dir := range []string{"agents", "commands"} {
		entries, err := os.ReadDir(filepath.Join(h.workDir, "external", "superpowers", dir))
		if err != nil {
			t.Fatalf("external %s area must exist: %v", dir, err)
		}
		for _, e := range entries {
			name := e.Name()
			if (dir == "agents" && name == "SCHEMA.md") || (dir == "commands" && name == "README.md") {
				t.Errorf("documentation file %s/%s must not be materialized", dir, name)
			}
		}
	}
	if !contains(out, "1 agents") || !contains(out, "1 commands") {
		t.Errorf("counts must reflect real items only:\n%s", out)
	}
	h.mustRun(t, "validate")
}

func TestVendorAddIncludeErrorOmitsSkippedDocs(t *testing.T) {
	h := newHarness(t)
	docFixture(h, t)

	out, err := h.run(t, "vendor", "add", "superpowers", h.upstreamDir, "--include", "typo")
	if err == nil {
		t.Fatalf("include with typo must fail:\n%s", out)
	}
	if contains(out, "SCHEMA") || contains(out, "README") {
		t.Errorf("skipped documentation must not appear as available ids:\n%s", out)
	}
	for _, want := range []string{"scout", "review", "good-skill"} {
		if !contains(out, want) {
			t.Errorf("real ids must still be listed as available (missing %s):\n%s", want, out)
		}
	}
}

func TestVendorUpdateSelectKeepSkippingDocs(t *testing.T) {
	h := newHarness(t)
	docFixture(h, t)
	h.mustRun(t, "vendor", "add", "superpowers", h.upstreamDir, "--include", "scout,review")

	out := h.mustRun(t, "vendor", "select", "superpowers", "--add", "good-skill")
	if contains(out, "SCHEMA") {
		t.Errorf("select report must not surface skipped docs:\n%s", out)
	}
	lock := readFile(t, filepath.Join(h.workDir, "agent-lib.lock.json"))
	if got := strings.Count(lock, "no agent frontmatter, skipped"); got != 1 {
		t.Errorf("warning must stay recorded exactly once in the lockfile, got %d", got)
	}
	h.mustRun(t, "validate")
}