package extractor

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

func writeTempCookieFile(t *testing.T, content string) string {
	t.Helper()
	dir := t.TempDir()
	path := filepath.Join(dir, "cookies.txt")
	if err := os.WriteFile(path, []byte(content), 0644); err != nil {
		t.Fatalf("failed to write temp cookie file: %v", err)
	}
	return path
}

func TestLoadCookiesFile_Valid(t *testing.T) {
	content := ".example.com\tTRUE\t/\tFALSE\t1700000000\tsession\tabc123\n"
	path := writeTempCookieFile(t, content)

	jar, err := LoadCookiesFile(path)
	if err != nil {
		t.Fatalf("LoadCookiesFile() error: %v", err)
	}

	cookies, _ := jar.GetAll()
	if len(cookies) != 1 {
		t.Fatalf("expected 1 cookie, got %d", len(cookies))
	}

	c := cookies[0]
	if c.Host != ".example.com" {
		t.Errorf("Host = %q, want %q", c.Host, ".example.com")
	}
	if !c.HttpOnly {
		t.Error("HttpOnly = false, want true")
	}
	if c.Path != "/" {
		t.Errorf("Path = %q, want %q", c.Path, "/")
	}
	if c.Secure {
		t.Error("Secure = true, want false")
	}
	if c.Name != "session" {
		t.Errorf("Name = %q, want %q", c.Name, "session")
	}
	if c.Value != "abc123" {
		t.Errorf("Value = %q, want %q", c.Value, "abc123")
	}
	if c.Expires.Unix() != 1700000000 {
		t.Errorf("Expires = %d, want 1700000000", c.Expires.Unix())
	}
}

func TestLoadCookiesFile_Comments(t *testing.T) {
	content := "# This is a comment\n.example.com\tTRUE\t/\tFALSE\t1700000000\tsession\tabc123\n"
	path := writeTempCookieFile(t, content)

	jar, err := LoadCookiesFile(path)
	if err != nil {
		t.Fatalf("LoadCookiesFile() error: %v", err)
	}

	cookies, _ := jar.GetAll()
	if len(cookies) != 1 {
		t.Errorf("expected 1 cookie (comment skipped), got %d", len(cookies))
	}
}

func TestLoadCookiesFile_EmptyLines(t *testing.T) {
	content := "\n\n.example.com\tTRUE\t/\tFALSE\t1700000000\tsession\tabc123\n\n"
	path := writeTempCookieFile(t, content)

	jar, err := LoadCookiesFile(path)
	if err != nil {
		t.Fatalf("LoadCookiesFile() error: %v", err)
	}

	cookies, _ := jar.GetAll()
	if len(cookies) != 1 {
		t.Errorf("expected 1 cookie (empty lines skipped), got %d", len(cookies))
	}
}

func TestLoadCookiesFile_ShortLines(t *testing.T) {
	content := "too\tfew\tfields\n.example.com\tTRUE\t/\tFALSE\t1700000000\tsession\tabc123\n"
	path := writeTempCookieFile(t, content)

	jar, err := LoadCookiesFile(path)
	if err != nil {
		t.Fatalf("LoadCookiesFile() error: %v", err)
	}

	cookies, _ := jar.GetAll()
	if len(cookies) != 1 {
		t.Errorf("expected 1 cookie (short line skipped), got %d", len(cookies))
	}
}

func TestLoadCookiesFile_InvalidExpiry(t *testing.T) {
	content := ".example.com\tTRUE\t/\tFALSE\tnotanumber\tsession\tabc123\n"
	path := writeTempCookieFile(t, content)

	jar, err := LoadCookiesFile(path)
	if err != nil {
		t.Fatalf("LoadCookiesFile() error: %v", err)
	}

	cookies, _ := jar.GetAll()
	if len(cookies) != 1 {
		t.Fatalf("expected 1 cookie, got %d", len(cookies))
	}

	// Should have a default expiry ~180 days from now
	now := time.Now()
	expected := now.Add(180 * 24 * time.Hour)
	diff := cookies[0].Expires.Sub(expected)
	if diff < -time.Minute || diff > time.Minute {
		t.Errorf("invalid expiry default: got %v, expected ~%v", cookies[0].Expires, expected)
	}
}

func TestLoadCookiesFile_HttpOnly(t *testing.T) {
	content := ".example.com\tTRUE\t/\tFALSE\t1700000000\ta\t1\n.other.com\tFALSE\t/\tFALSE\t1700000000\tb\t2\n"
	path := writeTempCookieFile(t, content)

	jar, err := LoadCookiesFile(path)
	if err != nil {
		t.Fatalf("LoadCookiesFile() error: %v", err)
	}

	cookies, _ := jar.GetAll()
	if len(cookies) != 2 {
		t.Fatalf("expected 2 cookies, got %d", len(cookies))
	}

	if !cookies[0].HttpOnly {
		t.Error("first cookie HttpOnly = false, want true")
	}
	if cookies[1].HttpOnly {
		t.Error("second cookie HttpOnly = true, want false")
	}
}

func TestLoadCookiesFile_Secure(t *testing.T) {
	content := ".example.com\tFALSE\t/\tTRUE\t1700000000\ta\t1\n.other.com\tFALSE\t/\tFALSE\t1700000000\tb\t2\n"
	path := writeTempCookieFile(t, content)

	jar, err := LoadCookiesFile(path)
	if err != nil {
		t.Fatalf("LoadCookiesFile() error: %v", err)
	}

	cookies, _ := jar.GetAll()
	if len(cookies) != 2 {
		t.Fatalf("expected 2 cookies, got %d", len(cookies))
	}

	if !cookies[0].Secure {
		t.Error("first cookie Secure = false, want true")
	}
	if cookies[1].Secure {
		t.Error("second cookie Secure = true, want false")
	}
}

func TestLoadCookiesFile_NonexistentFile(t *testing.T) {
	_, err := LoadCookiesFile("/nonexistent/path/cookies.txt")
	if err == nil {
		t.Error("expected error for nonexistent file")
	}
}

func TestLoadCookiesFile_Empty(t *testing.T) {
	path := writeTempCookieFile(t, "")

	jar, err := LoadCookiesFile(path)
	if err != nil {
		t.Fatalf("LoadCookiesFile() error: %v", err)
	}

	cookies, _ := jar.GetAll()
	if len(cookies) != 0 {
		t.Errorf("expected 0 cookies from empty file, got %d", len(cookies))
	}
}