package storage

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

	"donniemarko/internal/note"
)

func newSQLiteStorage(t *testing.T) *SQLiteStorage {
	t.Helper()

	dbPath := filepath.Join(t.TempDir(), "notes.db")
	st, err := NewSQLiteStorage(dbPath)
	if err != nil {
		t.Fatalf("new sqlite storage: %v", err)
	}
	t.Cleanup(func() {
		_ = st.Close()
	})

	return st
}

func sampleNote(id, path, title, content string, tstamp time.Time) *note.Note {
	return &note.Note{
		ID:        id,
		Path:      path,
		Title:     title,
		Content:   content,
		UpdatedAt: tstamp.Add(2 * time.Hour),
		Size:      int64(len(content)),
		Published: true,
	}
}

func TestSQLiteStorage_CreateGet(t *testing.T) {
	st := newSQLiteStorage(t)

	ts := time.Date(2026, 2, 3, 12, 0, 0, 0, time.UTC)
	n := sampleNote("n1", "notes/alpha.md", "Alpha", "# Alpha", ts)

	if err := st.Create(n); err != nil {
		t.Fatalf("create note: %v", err)
	}

	got, err := st.Get("n1")
	if err != nil {
		t.Fatalf("get note: %v", err)
	}

	if got.Title != n.Title || got.Path != n.Path || got.Content != n.Content {
		t.Fatalf("unexpected note fields: %+v", got)
	}
	if !got.UpdatedAt.Equal(n.UpdatedAt) || got.Size != n.Size {
		t.Fatalf("unexpected time fields: %+v", got)
	}
	if !got.Published {
		t.Fatalf("expected published to be true")
	}
}

func TestSQLiteStorage_GetAll(t *testing.T) {
	st := newSQLiteStorage(t)

	ts := time.Date(2026, 2, 3, 12, 0, 0, 0, time.UTC)
	if err := st.Create(sampleNote("n1", "notes/alpha.md", "Alpha", "one", ts)); err != nil {
		t.Fatalf("create note: %v", err)
	}
	if err := st.Create(sampleNote("n2", "notes/beta.md", "Beta", "two", ts)); err != nil {
		t.Fatalf("create note: %v", err)
	}

	all := st.GetAll()
	if len(all) != 2 {
		t.Fatalf("expected 2 notes, got %d", len(all))
	}
}

func TestSQLiteStorage_Update(t *testing.T) {
	st := newSQLiteStorage(t)

	ts := time.Date(2026, 2, 3, 12, 0, 0, 0, time.UTC)
	n := sampleNote("n1", "notes/alpha.md", "Alpha", "one", ts)
	if err := st.Create(n); err != nil {
		t.Fatalf("create note: %v", err)
	}

	updated := sampleNote("n1", "notes/alpha.md", "Alpha Updated", "two", ts.Add(24*time.Hour))
	st.Update("n1", updated)

	got, err := st.Get("n1")
	if err != nil {
		t.Fatalf("get note: %v", err)
	}
	if got.Title != "Alpha Updated" || got.Content != "two" {
		t.Fatalf("update did not persist: %+v", got)
	}
}

func TestSQLiteStorage_Delete(t *testing.T) {
	st := newSQLiteStorage(t)

	ts := time.Date(2026, 2, 3, 12, 0, 0, 0, time.UTC)
	if err := st.Create(sampleNote("n1", "notes/alpha.md", "Alpha", "one", ts)); err != nil {
		t.Fatalf("create note: %v", err)
	}

	st.Delete("n1")

	if st.Count() != 0 {
		t.Fatalf("expected count 0 after delete")
	}

	if _, err := st.Get("n1"); err == nil {
		t.Fatalf("expected error for missing note")
	}
}

func TestSQLiteStorage_DeleteByPath(t *testing.T) {
	st := newSQLiteStorage(t)

	ts := time.Date(2026, 2, 3, 12, 0, 0, 0, time.UTC)
	n := sampleNote("n1", "notes/alpha.md", "Alpha", "one", ts)
	if err := st.Create(n); err != nil {
		t.Fatalf("create note: %v", err)
	}

	st.DeleteByPath("notes/alpha.md")

	if st.Count() != 0 {
		t.Fatalf("expected count 0 after delete by path")
	}
}

func TestSQLiteStorage_Search(t *testing.T) {
	st := newSQLiteStorage(t)

	ts := time.Date(2026, 2, 3, 12, 0, 0, 0, time.UTC)
	if err := st.Create(sampleNote("n1", "notes/alpha.md", "Alpha", "Rust tips", ts)); err != nil {
		t.Fatalf("create note: %v", err)
	}
	if err := st.Create(sampleNote("n2", "notes/beta.md", "Beta", "Golang tutorial", ts)); err != nil {
		t.Fatalf("create note: %v", err)
	}

	results := st.Search("rust")
	if len(results) != 1 {
		t.Fatalf("expected 1 result, got %d", len(results))
	}
	if results[0].ID != "n1" {
		t.Fatalf("expected rust match to be n1")
	}
}

func TestSQLiteStorage_Count(t *testing.T) {
	st := newSQLiteStorage(t)

	if st.Count() != 0 {
		t.Fatalf("expected empty count to be 0")
	}

	ts := time.Date(2026, 2, 3, 12, 0, 0, 0, time.UTC)
	if err := st.Create(sampleNote("n1", "notes/alpha.md", "Alpha", "one", ts)); err != nil {
		t.Fatalf("create note: %v", err)
	}
	if err := st.Create(sampleNote("n2", "notes/beta.md", "Beta", "two", ts)); err != nil {
		t.Fatalf("create note: %v", err)
	}

	if st.Count() != 2 {
		t.Fatalf("expected count 2")
	}
}

func TestSQLiteStorage_Tags(t *testing.T) {
	st := newSQLiteStorage(t)

	ts := time.Date(2026, 2, 3, 12, 0, 0, 0, time.UTC)
	if err := st.Create(sampleNote("n1", "notes/alpha.md", "Alpha", "one", ts)); err != nil {
		t.Fatalf("create note: %v", err)
	}

	if err := st.AddTag("n1", "go"); err != nil {
		t.Fatalf("add tag: %v", err)
	}
	if err := st.AddTag("n1", "rust"); err != nil {
		t.Fatalf("add tag: %v", err)
	}

	tags := st.GetTags("n1")
	if len(tags) != 2 {
		t.Fatalf("expected 2 tags, got %d", len(tags))
	}

	if err := st.RemoveTag("n1", "go"); err != nil {
		t.Fatalf("remove tag: %v", err)
	}

	tags = st.GetTags("n1")
	if len(tags) != 1 || tags[0] != "rust" {
		t.Fatalf("expected remaining tag rust, got %+v", tags)
	}
}

func TestSQLiteStorage_SearchByTag(t *testing.T) {
	st := newSQLiteStorage(t)

	ts := time.Date(2026, 2, 3, 12, 0, 0, 0, time.UTC)
	if err := st.Create(sampleNote("n1", "notes/alpha.md", "Alpha", "no match", ts)); err != nil {
		t.Fatalf("create note: %v", err)
	}
	if err := st.Create(sampleNote("n2", "notes/beta.md", "Beta", "content", ts)); err != nil {
		t.Fatalf("create note: %v", err)
	}

	if err := st.AddTag("n2", "Go"); err != nil {
		t.Fatalf("add tag: %v", err)
	}

	results := st.Search("go")
	if len(results) != 1 {
		t.Fatalf("expected 1 result, got %d", len(results))
	}
	if results[0].ID != "n2" {
		t.Fatalf("expected tag match to be n2")
	}
}

func TestSQLiteStorage_Create_Upsert(t *testing.T) {
	st := newSQLiteStorage(t)

	ts := time.Date(2026, 2, 3, 12, 0, 0, 0, time.UTC)
	n := sampleNote("n1", "notes/alpha.md", "Alpha", "one", ts)
	if err := st.Create(n); err != nil {
		t.Fatalf("create note: %v", err)
	}

	n.Content = "updated"
	n.Title = "Alpha Updated"
	n.UpdatedAt = ts.Add(4 * time.Hour)
	if err := st.Create(n); err != nil {
		t.Fatalf("upsert note: %v", err)
	}

	got, err := st.Get("n1")
	if err != nil {
		t.Fatalf("get note: %v", err)
	}
	if got.Title != "Alpha Updated" || got.Content != "updated" {
		t.Fatalf("expected note to be updated, got %+v", got)
	}
}

func TestSQLiteStorage_Create_UpsertSkipsOlder(t *testing.T) {
	st := newSQLiteStorage(t)

	ts := time.Date(2026, 2, 3, 12, 0, 0, 0, time.UTC)
	n := sampleNote("n1", "notes/alpha.md", "Alpha", "one", ts)
	if err := st.Create(n); err != nil {
		t.Fatalf("create note: %v", err)
	}

	n.Content = "older"
	n.UpdatedAt = ts.Add(-2 * time.Hour)
	if err := st.Create(n); err != nil {
		t.Fatalf("upsert note: %v", err)
	}

	got, err := st.Get("n1")
	if err != nil {
		t.Fatalf("get note: %v", err)
	}
	if got.Content != "one" {
		t.Fatalf("expected existing content to remain, got %q", got.Content)
	}
}