package handler

import (
	"net/http"
	"net/http/httptest"
	"os"
	"path/filepath"
	"strings"
	"testing"

	"codeberg.org/VARASYS/ZDDC/zddc/internal/config"
)

func TestIsProjectRootURL(t *testing.T) {
	cases := map[string]bool{
		"/Project-1":   true,
		"/Project_2":   true,
		"/Project-1/":  false, // trailing slash
		"/Project-1/x": false, // deeper
		"/":            false, // deployment root
		"":             false,
	}
	for path, want := range cases {
		if got := IsProjectRootURL(path); got != want {
			t.Errorf("IsProjectRootURL(%q) = %v, want %v", path, got, want)
		}
	}
}

func TestServeProjectLanding(t *testing.T) {
	root := t.TempDir()
	// Need .zddc on disk for the resolver to be happy at the root.
	if err := os.WriteFile(filepath.Join(root, ".zddc"),
		[]byte("acl:\n  permissions:\n    \"*\": rwcda\n"), 0o644); err != nil {
		t.Fatal(err)
	}
	// Project with two parties under archive/ (PascalCase to exercise
	// the case-insensitive archive resolver) and one orphaned dot-prefixed
	// dir that should be filtered out of the party list.
	for _, sub := range []string{
		"Project-1/Archive/PartyA",
		"Project-1/Archive/PartyB",
		"Project-1/Archive/.hidden",
	} {
		if err := os.MkdirAll(filepath.Join(root, sub), 0o755); err != nil {
			t.Fatal(err)
		}
	}

	cfg := config.Config{Root: root}

	t.Run("renders project name + stage cards", func(t *testing.T) {
		req := httptest.NewRequest(http.MethodGet, "/Project-1", nil)
		rec := httptest.NewRecorder()
		ServeProjectLanding(cfg, rec, req, "Project-1")

		if rec.Code != http.StatusOK {
			t.Fatalf("status=%d", rec.Code)
		}
		body := rec.Body.String()

		// Page identifies the project and includes the four stages.
		for _, want := range []string{
			"Project-1",
			"<h3>Archive</h3>",
			"<h3>Working</h3>",
			"<h3>Staging</h3>",
			"<h3>Reviewing</h3>",
			"Master Deliverables List",
			`href="/Project-1/working"`,
			`href="/Project-1/archive/"`,
			// Logo wraps to the deployment root — same convention as
			// shared/logo.js applies in tools (which would route here
			// to /Project-1, the project landing). On the project
			// landing itself, "next up" is the deployment root.
			`<a class="app-header__logo-link" href="/"`,
			`class="app-header__logo"`,
		} {
			if !strings.Contains(body, want) {
				t.Errorf("body missing %q", want)
			}
		}
	})

	t.Run("lists existing parties as direct MDL links", func(t *testing.T) {
		req := httptest.NewRequest(http.MethodGet, "/Project-1", nil)
		rec := httptest.NewRecorder()
		ServeProjectLanding(cfg, rec, req, "Project-1")
		body := rec.Body.String()

		// Both parties surfaced; on-disk casing preserved in the URL.
		if !strings.Contains(body, `href="/Project-1/Archive/PartyA/mdl/"`) {
			t.Errorf("body missing PartyA MDL link")
		}
		if !strings.Contains(body, `href="/Project-1/Archive/PartyB/mdl/"`) {
			t.Errorf("body missing PartyB MDL link")
		}
		// Dot-prefixed entries filtered out.
		if strings.Contains(body, ".hidden") {
			t.Errorf("body should not list .hidden directory")
		}
	})

	t.Run("no parties yet → falls back to generic instruction", func(t *testing.T) {
		bare := t.TempDir()
		if err := os.WriteFile(filepath.Join(bare, ".zddc"),
			[]byte("acl:\n  permissions:\n    \"*\": rwcda\n"), 0o644); err != nil {
			t.Fatal(err)
		}
		if err := os.MkdirAll(filepath.Join(bare, "Fresh"), 0o755); err != nil {
			t.Fatal(err)
		}
		bareCfg := config.Config{Root: bare}

		req := httptest.NewRequest(http.MethodGet, "/Fresh", nil)
		rec := httptest.NewRecorder()
		ServeProjectLanding(bareCfg, rec, req, "Fresh")
		body := rec.Body.String()

		// Falls through to the "no party folders yet" copy.
		if !strings.Contains(body, "No party folders yet") {
			t.Errorf("body missing fresh-project fallback copy")
		}
	})
}