package sqlite_test

import (
	"errors"
	"testing"

	"context"
	"os"
	"path/filepath"
	"time"

	"git.hrafn.xyz/aether/notes/internal/models"
	"git.hrafn.xyz/aether/notes/internal/store/sqlite"
)

func TestCreateSQLiteStore(t *testing.T) {
	testcases := []struct {
		name          string
		dbPath        string
		expectedError bool
	}{
		{
			name:          "valid path",
			dbPath:        filepath.Join(t.TempDir(), "test.db"),
			expectedError: false,
		},
		{
			name:          "invalid path",
			dbPath:        filepath.Join(t.TempDir(), "Really", "Deep", "Dir", "That", "Does", "Not", "Exist", "test.db"),
			expectedError: true,
		},
	}
	for _, tc := range testcases {
		t.Run(tc.name, func(t *testing.T) {
			store, err := sqlite.NewSQLiteStore(context.Background(), tc.dbPath)
			if tc.expectedError {
				if err == nil {
					t.Errorf("expected an error but got none")
				}
			} else {
				if err != nil {
					t.Errorf("unexpected error: %v", err)
				}
			}
			if !tc.expectedError && store == nil {
				t.Errorf("expected a store but got none")
			}
			defer func() {
				if store != nil {
					store.Close()
				}
				// Clean up the database file after the test
				if _, err := os.Stat(tc.dbPath); !errors.Is(err, os.ErrNotExist) {
					if err := os.Remove(tc.dbPath); err != nil {
						t.Errorf("failed to clean up database file: %v", err)
					}
				}
			}()
		})
	}

}

func TestSaveNote(t *testing.T) {
	dbPath := filepath.Join(t.TempDir(), "test.db")
	store, err := sqlite.NewSQLiteStore(context.Background(), dbPath)
	if err != nil {
		t.Fatalf("failed to create SQLite store: %v", err)
	}
	defer func() {
		store.Close()
		if _, err := os.Stat(dbPath); !errors.Is(err, os.ErrNotExist) {
			if err := os.Remove(dbPath); err != nil {
				t.Errorf("failed to clean up database file: %v", err)
			}
		}
	}()

	testcases := []struct {
		name          string
		note          models.Note
		expectedNote  models.Note
		expectedError bool
	}{
		{
			name: "new note",
			note: models.Note{
				Content:    "Test note",
				LastUpdate: time.Now(),
			},
			expectedNote: models.Note{
				ID:         1,
				Content:    "Test note",
				LastUpdate: time.Now(),
			},
			expectedError: false,
		}, {
			name: "new 2 note",
			note: models.Note{
				Content:    "Test note 2!",
				LastUpdate: time.Now(),
			},
			expectedNote: models.Note{
				ID:         2,
				Content:    "Test note 2!",
				LastUpdate: time.Now(),
			},
			expectedError: false,
		},
		{
			name: "update note",
			note: models.Note{
				ID:         1,
				Content:    "Updated note",
				LastUpdate: time.Now(),
			},
			expectedNote: models.Note{
				ID:         1,
				Content:    "Updated note",
				LastUpdate: time.Now(),
			},
			expectedError: false,
		},
		{
			name: "update non-existent note",
			note: models.Note{
				ID:         999,
				Content:    "This note does not exist",
				LastUpdate: time.Now(),
			},
			expectedNote:  models.Note{},
			expectedError: true,
		},
	}
	for _, tc := range testcases {
		t.Run(tc.name, func(t *testing.T) {
			savedNote, err := store.SaveNote(context.Background(), tc.note)
			if tc.expectedError {
				if err == nil {
					t.Errorf("expected an error but got none")
				}
			}
			if !tc.expectedError {
				if err != nil {
					t.Errorf("unexpected error: %v", err)
				}
				if savedNote.Content != tc.note.Content {
					t.Errorf("expected content %q but got %q", tc.note.Content, savedNote.Content)
				}
			}
		})
	}
}

func TestGetNoteByID(t *testing.T) {
	dbPath := filepath.Join(t.TempDir(), "test.db")
	store, err := sqlite.NewSQLiteStore(context.Background(), dbPath)
	if err != nil {
		t.Fatalf("failed to create SQLite store: %v", err)
	}
	defer func() {
		store.Close()
		if _, err := os.Stat(dbPath); !errors.Is(err, os.ErrNotExist) {
			if err := os.Remove(dbPath); err != nil {
				t.Errorf("failed to clean up database file: %v", err)
			}
		}
	}()
	store.SaveNote(context.Background(), models.Note{
		Content:    "Test note",
		LastUpdate: time.Date(2000, 1, 1, 0, 0, 0, 0, time.UTC),
	})

	testcases := []struct {
		name          string
		id            int
		expectedNote  models.Note
		expectedError bool
	}{
		{
			name: "get existing note",
			id:   1,
			expectedNote: models.Note{
				ID:         1,
				Content:    "Test note",
				LastUpdate: time.Date(2000, 1, 1, 0, 0, 0, 0, time.UTC),
			},
			expectedError: false,
		},
		{
			name:          "get non-existent note",
			id:            999,
			expectedNote:  models.Note{},
			expectedError: true,
		},
	}
	for _, tc := range testcases {
		t.Run(tc.name, func(t *testing.T) {
			note, err := store.GetNoteByID(context.Background(), tc.id)
			if tc.expectedError {
				if err == nil {
					t.Errorf("expected an error but got none")
				}
			} else {
				if err != nil {
					t.Errorf("unexpected error: %v", err)
				}
				if note.ID != tc.expectedNote.ID || note.Content != tc.expectedNote.Content || !note.LastUpdate.Equal(tc.expectedNote.LastUpdate) {
					t.Errorf("expected note %+v but got %+v", tc.expectedNote, note)
				}
			}
		})
	}
}

func TestGetAllNotes(t *testing.T) {
	dbPath := filepath.Join(t.TempDir(), "test.db")
	store, err := sqlite.NewSQLiteStore(context.Background(), dbPath)
	if err != nil {
		t.Fatalf("failed to create SQLite store: %v", err)
	}
	defer func() {
		store.Close()
		if _, err := os.Stat(dbPath); !errors.Is(err, os.ErrNotExist) {
			if err := os.Remove(dbPath); err != nil {
				t.Errorf("failed to clean up database file: %v", err)
			}
		}
	}()

	testcases := []struct {
		name          string
		expectedNotes []models.Note
		expectedError bool
	}{
		{
			name:          "get all notes when empty",
			expectedNotes: []models.Note{},
			expectedError: false,
		},
	}
	for _, tc := range testcases {
		t.Run(tc.name, func(t *testing.T) {
			notes, err := store.GetAllNotes(context.Background())
			if tc.expectedError {
				if err == nil {
					t.Errorf("expected an error but got none")
				}
			} else {
				if err != nil {
					t.Errorf("unexpected error: %v", err)
				}
				if len(notes) != len(tc.expectedNotes) {
					t.Errorf("expected %d notes but got %d", len(tc.expectedNotes), len(notes))
				}
			}
		})
	}

	store.SaveNote(context.Background(), models.Note{
		Content:    "Test note 1",
		LastUpdate: time.Date(2000, 1, 1, 0, 0, 0, 0, time.UTC),
	})
	store.SaveNote(context.Background(), models.Note{
		Content:    "Test note 2",
		LastUpdate: time.Date(2000, 1, 2, 0, 0, 0, 0, time.UTC),
	})

	testcases = []struct {
		name          string
		expectedNotes []models.Note
		expectedError bool
	}{
		{
			name: "get all notes when not empty",
			expectedNotes: []models.Note{
				{
					ID:         1,
					Content:    "Test note 1",
					LastUpdate: time.Date(2000, 1, 1, 0, 0, 0, 0, time.UTC),
				},
				{
					ID:         2,
					Content:    "Test note 2",
					LastUpdate: time.Date(2000, 1, 2, 0, 0, 0, 0, time.UTC),
				},
			},
			expectedError: false,
		},
	}
	for _, tc := range testcases {
		t.Run(tc.name, func(t *testing.T) {
			notes, err := store.GetAllNotes(context.Background())
			if tc.expectedError {
				if err == nil {
					t.Errorf("expected an error but got none")
				}
			} else {
				if err != nil {
					t.Errorf("unexpected error: %v", err)
				}
				if len(notes) != len(tc.expectedNotes) {
					t.Errorf("expected %d notes but got %d", len(tc.expectedNotes), len(notes))
				}
			}
		})
	}
}

func TestDeleteNoteByID(t *testing.T) {
	dbPath := filepath.Join(t.TempDir(), "test.db")
	store, err := sqlite.NewSQLiteStore(context.Background(), dbPath)
	if err != nil {
		t.Fatalf("failed to create SQLite store: %v", err)
	}
	defer func() {
		store.Close()
		if _, err := os.Stat(dbPath); !errors.Is(err, os.ErrNotExist) {
			if err := os.Remove(dbPath); err != nil {
				t.Errorf("failed to clean up database file: %v", err)
			}
		}
	}()

	store.SaveNote(context.Background(), models.Note{
		Content:    "Test note 1",
		LastUpdate: time.Date(2000, 1, 1, 0, 0, 0, 0, time.UTC),
	})
	store.SaveNote(context.Background(), models.Note{
		Content:    "Test note 2",
		LastUpdate: time.Date(2000, 1, 1, 0, 0, 0, 0, time.UTC),
	})
	store.SaveNote(context.Background(), models.Note{
		Content:    "Test note 3",
		LastUpdate: time.Date(2000, 1, 1, 0, 0, 0, 0, time.UTC),
	})

	testcases := []struct {
		name          string
		id            int
		expectedError bool
	}{
		{
			name:          "delete existing note",
			id:            2,
			expectedError: false,
		},
		{
			name:          "delete non-existent note",
			id:            999,
			expectedError: true,
		},
	}
	for _, tc := range testcases {
		t.Run(tc.name, func(t *testing.T) {
			err := store.DeleteNoteByID(context.Background(), tc.id)
			if tc.expectedError {
				if err == nil {
					t.Errorf("expected an error but got none")
				}
			} else {
				if err != nil {
					t.Errorf("unexpected error: %v", err)
				} else {
					_, err := store.GetNoteByID(context.Background(), tc.id)
					if err == nil {
						t.Errorf("expected an error when retrieving deleted note but got none")
					}
				}
			}
		})
	}
}