package autofillcache

import (
	"encoding/json"
	"os"
	"path/filepath"
	"testing"
	"time"

	"git.julianfamily.org/keepassgo/vault"
)

func TestBuildFiltersAndNormalizesEntries(t *testing.T) {
	t.Parallel()

	now := time.Date(2026, time.March, 31, 12, 0, 0, 0, time.UTC)
	got := Build(vault.Model{
		Entries: []vault.Entry{
			{
				ID:       "one",
				Title:    "Chrome Test",
				Username: "joe",
				Password: "secret",
				URL:      "https://10.0.2.2:8443/login",
				Path:     []string{"Crew", "Internet"},
			},
			{
				ID:       "two",
				Title:    "No Password",
				Username: "joe",
				URL:      "https://example.com",
			},
			{
				ID:       "three",
				Title:    "Bare Host",
				Username: "user",
				Password: "pass",
				URL:      "surveillance.crew.example.invalid",
			},
		},
	}, now)

	if len(got.Entries) != 2 {
		t.Fatalf("entry count = %d, want 2", len(got.Entries))
	}
	if got.Entries[0].Host != "10.0.2.2" {
		t.Fatalf("first host = %q, want 10.0.2.2", got.Entries[0].Host)
	}
	if got.Entries[1].Host != "surveillance.crew.example.invalid" {
		t.Fatalf("second host = %q, want lights.julianfamily.org", got.Entries[1].Host)
	}
	if got.UpdatedAt != "2026-03-31T12:00:00Z" {
		t.Fatalf("updatedAt = %q", got.UpdatedAt)
	}
}

func TestWriteAndClear(t *testing.T) {
	t.Parallel()

	dir := t.TempDir()
	path := filepath.Join(dir, "autofill-cache.json")
	model := vault.Model{
		Entries: []vault.Entry{
			{ID: "one", Title: "Chrome Test", Username: "joe", Password: "secret", URL: "https://10.0.2.2:8443/login"},
		},
	}

	if err := Write(path, model, time.Date(2026, time.March, 31, 12, 0, 0, 0, time.UTC)); err != nil {
		t.Fatalf("Write() error = %v", err)
	}
	data, err := os.ReadFile(path)
	if err != nil {
		t.Fatalf("ReadFile() error = %v", err)
	}
	var got File
	if err := json.Unmarshal(data, &got); err != nil {
		t.Fatalf("Unmarshal() error = %v", err)
	}
	if len(got.Entries) != 1 || got.Entries[0].Host != "10.0.2.2" {
		t.Fatalf("cache entries = %#v", got.Entries)
	}
	if err := Clear(path); err != nil {
		t.Fatalf("Clear() error = %v", err)
	}
	if _, err := os.Stat(path); !os.IsNotExist(err) {
		t.Fatalf("cache path still exists, stat err = %v", err)
	}
}

func TestMatchChoosesExactURLWhenHostsRepeat(t *testing.T) {
	t.Parallel()

	cache := File{
		Entries: []Entry{
			{
				ID:       "one",
				Title:    "Primary Login",
				Username: "first",
				Password: "secret1",
				URL:      "https://10.0.2.2:8443/login/",
				Host:     "10.0.2.2",
			},
			{
				ID:       "two",
				Title:    "Alt Login",
				Username: "second",
				Password: "secret2",
				URL:      "https://10.0.2.2:8443/alt/",
				Host:     "10.0.2.2",
			},
		},
	}

	got, ok := Match(cache, "https://10.0.2.2:8443/alt/")
	if !ok {
		t.Fatalf("Match() found no entry")
	}
	if got.ID != "two" {
		t.Fatalf("Match() entry = %q, want two", got.ID)
	}
}

func TestMatchRejectsAmbiguousSharedHost(t *testing.T) {
	t.Parallel()

	cache := File{
		Entries: []Entry{
			{
				ID:       "one",
				Title:    "Host A",
				Username: "first",
				Password: "secret1",
				URL:      "https://surveillance.crew.example.invalid/",
				Host:     "surveillance.crew.example.invalid",
			},
			{
				ID:       "two",
				Title:    "Host B",
				Username: "second",
				Password: "secret2",
				URL:      "https://surveillance.crew.example.invalid/",
				Host:     "surveillance.crew.example.invalid",
			},
		},
	}

	if _, ok := Match(cache, "https://surveillance.crew.example.invalid/"); ok {
		t.Fatalf("Match() unexpectedly resolved ambiguous shared host")
	}
}

func TestMatchChoosesLongestPathPrefix(t *testing.T) {
	t.Parallel()

	cache := File{
		Entries: []Entry{
			{
				ID:       "one",
				Title:    "Generic Login",
				Username: "generic",
				Password: "secret1",
				URL:      "https://example.com/",
				Host:     "example.com",
			},
			{
				ID:       "two",
				Title:    "Admin Login",
				Username: "admin",
				Password: "secret2",
				URL:      "https://example.com/admin",
				Host:     "example.com",
			},
		},
	}

	got, ok := Match(cache, "https://example.com/admin/login")
	if !ok {
		t.Fatalf("Match() found no entry")
	}
	if got.ID != "two" {
		t.Fatalf("Match() entry = %q, want two", got.ID)
	}
}