| 1 | package main |
| 2 | |
| 3 | import ( |
| 4 | "database/sql" |
| 5 | "errors" |
| 6 | "strings" |
| 7 | "time" |
| 8 | ) |
| 9 | |
| 10 | const booksSchema = ` |
| 11 | CREATE TABLE IF NOT EXISTS books ( |
| 12 | id INTEGER PRIMARY KEY AUTOINCREMENT, |
| 13 | google_id TEXT UNIQUE, |
| 14 | title TEXT NOT NULL, |
| 15 | authors TEXT NOT NULL, |
| 16 | isbn TEXT, |
| 17 | cover_url TEXT, |
| 18 | notes TEXT, |
| 19 | status TEXT NOT NULL CHECK (status IN ('read','reading','want')), |
| 20 | added_at INTEGER NOT NULL, |
| 21 | updated_at INTEGER NOT NULL |
| 22 | ); |
| 23 | CREATE INDEX IF NOT EXISTS idx_books_status_added ON books(status, added_at DESC); |
| 24 | |
| 25 | CREATE TABLE IF NOT EXISTS settings ( |
| 26 | key TEXT PRIMARY KEY, |
| 27 | value TEXT NOT NULL |
| 28 | ); |
| 29 | ` |
| 30 | |
| 31 | type Book struct { |
| 32 | ID int64 `json:"id"` |
| 33 | GoogleID *string `json:"google_id,omitempty"` |
| 34 | Title string `json:"title"` |
| 35 | Authors string `json:"authors"` |
| 36 | ISBN *string `json:"isbn,omitempty"` |
| 37 | CoverURL *string `json:"cover_url,omitempty"` |
| 38 | Notes *string `json:"notes,omitempty"` |
| 39 | Status string `json:"status"` |
| 40 | AddedAt int64 `json:"added_at"` |
| 41 | UpdatedAt int64 `json:"updated_at"` |
| 42 | } |
| 43 | |
| 44 | type NewBook struct { |
| 45 | GoogleID *string |
| 46 | Title string |
| 47 | Authors string |
| 48 | ISBN *string |
| 49 | CoverURL *string |
| 50 | Notes *string |
| 51 | Status string |
| 52 | } |
| 53 | |
| 54 | type CategoryLabels struct { |
| 55 | Reading string |
| 56 | Read string |
| 57 | Want string |
| 58 | } |
| 59 | |
| 60 | func defaultLabels() CategoryLabels { |
| 61 | return CategoryLabels{Reading: "Reading", Read: "Read", Want: "Want to Read"} |
| 62 | } |
| 63 | |
| 64 | const selectCols = `id, google_id, title, authors, isbn, cover_url, notes, status, added_at, updated_at` |
| 65 | |
| 66 | func scanBook(s interface{ Scan(...any) error }) (*Book, error) { |
| 67 | var b Book |
| 68 | var gid, isbn, cover, notes sql.NullString |
| 69 | err := s.Scan(&b.ID, &gid, &b.Title, &b.Authors, &isbn, &cover, ¬es, &b.Status, &b.AddedAt, &b.UpdatedAt) |
| 70 | if errors.Is(err, sql.ErrNoRows) { |
| 71 | return nil, nil |
| 72 | } |
| 73 | if err != nil { |
| 74 | return nil, err |
| 75 | } |
| 76 | if gid.Valid { |
| 77 | v := gid.String |
| 78 | b.GoogleID = &v |
| 79 | } |
| 80 | if isbn.Valid { |
| 81 | v := isbn.String |
| 82 | b.ISBN = &v |
| 83 | } |
| 84 | if cover.Valid { |
| 85 | v := cover.String |
| 86 | b.CoverURL = &v |
| 87 | } |
| 88 | if notes.Valid { |
| 89 | v := notes.String |
| 90 | b.Notes = &v |
| 91 | } |
| 92 | return &b, nil |
| 93 | } |
| 94 | |
| 95 | func listBooks(db *sql.DB, status string) ([]Book, error) { |
| 96 | var rows *sql.Rows |
| 97 | var err error |
| 98 | if status != "" { |
| 99 | rows, err = db.Query(`SELECT `+selectCols+` FROM books WHERE status = ? ORDER BY added_at DESC`, status) |
| 100 | } else { |
| 101 | rows, err = db.Query(`SELECT ` + selectCols + ` FROM books ORDER BY added_at DESC`) |
| 102 | } |
| 103 | if err != nil { |
| 104 | return nil, err |
| 105 | } |
| 106 | defer rows.Close() |
| 107 | var out []Book |
| 108 | for rows.Next() { |
| 109 | b, err := scanBook(rows) |
| 110 | if err != nil { |
| 111 | return nil, err |
| 112 | } |
| 113 | out = append(out, *b) |
| 114 | } |
| 115 | return out, rows.Err() |
| 116 | } |
| 117 | |
| 118 | func getBook(db *sql.DB, id int64) (*Book, error) { |
| 119 | return scanBook(db.QueryRow(`SELECT `+selectCols+` FROM books WHERE id = ?`, id)) |
| 120 | } |
| 121 | |
| 122 | func insertBook(db *sql.DB, b NewBook) (int64, error) { |
| 123 | now := time.Now().UTC().Unix() |
| 124 | var gid, isbn, cover, notes any |
| 125 | if b.GoogleID != nil && *b.GoogleID != "" { |
| 126 | gid = *b.GoogleID |
| 127 | } |
| 128 | if b.ISBN != nil && *b.ISBN != "" { |
| 129 | isbn = *b.ISBN |
| 130 | } |
| 131 | if b.CoverURL != nil && *b.CoverURL != "" { |
| 132 | cover = *b.CoverURL |
| 133 | } |
| 134 | if b.Notes != nil && *b.Notes != "" { |
| 135 | notes = *b.Notes |
| 136 | } |
| 137 | res, err := db.Exec( |
| 138 | `INSERT INTO books (google_id, title, authors, isbn, cover_url, notes, status, added_at, updated_at) |
| 139 | VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?) |
| 140 | ON CONFLICT(google_id) DO UPDATE SET status = excluded.status, updated_at = excluded.updated_at`, |
| 141 | gid, b.Title, b.Authors, isbn, cover, notes, b.Status, now, now, |
| 142 | ) |
| 143 | if err != nil { |
| 144 | return 0, err |
| 145 | } |
| 146 | return res.LastInsertId() |
| 147 | } |
| 148 | |
| 149 | func updateBookStatus(db *sql.DB, id int64, status string) error { |
| 150 | _, err := db.Exec(`UPDATE books SET status = ?, updated_at = ? WHERE id = ?`, status, time.Now().UTC().Unix(), id) |
| 151 | return err |
| 152 | } |
| 153 | |
| 154 | func updateBookNotes(db *sql.DB, id int64, notes *string) error { |
| 155 | var v any |
| 156 | if notes != nil && *notes != "" { |
| 157 | v = *notes |
| 158 | } |
| 159 | _, err := db.Exec(`UPDATE books SET notes = ?, updated_at = ? WHERE id = ?`, v, time.Now().UTC().Unix(), id) |
| 160 | return err |
| 161 | } |
| 162 | |
| 163 | func deleteBook(db *sql.DB, id int64) error { |
| 164 | _, err := db.Exec(`DELETE FROM books WHERE id = ?`, id) |
| 165 | return err |
| 166 | } |
| 167 | |
| 168 | func searchBooks(db *sql.DB, q string) ([]Book, error) { |
| 169 | term := strings.TrimSpace(q) |
| 170 | if term == "" { |
| 171 | return nil, nil |
| 172 | } |
| 173 | pattern := "%" + strings.ToLower(term) + "%" |
| 174 | rows, err := db.Query( |
| 175 | `SELECT `+selectCols+` FROM books |
| 176 | WHERE LOWER(title) LIKE ? OR LOWER(authors) LIKE ? OR LOWER(IFNULL(isbn,'')) LIKE ? |
| 177 | ORDER BY added_at DESC LIMIT 50`, |
| 178 | pattern, pattern, pattern, |
| 179 | ) |
| 180 | if err != nil { |
| 181 | return nil, err |
| 182 | } |
| 183 | defer rows.Close() |
| 184 | var out []Book |
| 185 | for rows.Next() { |
| 186 | b, err := scanBook(rows) |
| 187 | if err != nil { |
| 188 | return nil, err |
| 189 | } |
| 190 | out = append(out, *b) |
| 191 | } |
| 192 | return out, rows.Err() |
| 193 | } |
| 194 | |
| 195 | func getSetting(db *sql.DB, key string) (string, bool, error) { |
| 196 | var v string |
| 197 | err := db.QueryRow(`SELECT value FROM settings WHERE key = ?`, key).Scan(&v) |
| 198 | if errors.Is(err, sql.ErrNoRows) { |
| 199 | return "", false, nil |
| 200 | } |
| 201 | if err != nil { |
| 202 | return "", false, err |
| 203 | } |
| 204 | return v, true, nil |
| 205 | } |
| 206 | |
| 207 | func setSetting(db *sql.DB, key, value string) error { |
| 208 | _, err := db.Exec(`INSERT INTO settings (key, value) VALUES (?, ?) ON CONFLICT(key) DO UPDATE SET value = excluded.value`, key, value) |
| 209 | return err |
| 210 | } |
| 211 | |
| 212 | func getCategoryLabels(db *sql.DB) (CategoryLabels, error) { |
| 213 | labels := defaultLabels() |
| 214 | if v, ok, err := getSetting(db, "category_label.reading"); err == nil && ok { |
| 215 | labels.Reading = v |
| 216 | } else if err != nil { |
| 217 | return labels, err |
| 218 | } |
| 219 | if v, ok, err := getSetting(db, "category_label.read"); err == nil && ok { |
| 220 | labels.Read = v |
| 221 | } |
| 222 | if v, ok, err := getSetting(db, "category_label.want"); err == nil && ok { |
| 223 | labels.Want = v |
| 224 | } |
| 225 | return labels, nil |
| 226 | } |
| 227 | |
| 228 | func labelFor(l CategoryLabels, status string) string { |
| 229 | switch status { |
| 230 | case "reading": |
| 231 | return l.Reading |
| 232 | case "read": |
| 233 | return l.Read |
| 234 | case "want": |
| 235 | return l.Want |
| 236 | } |
| 237 | return status |
| 238 | } |
| 239 | |
| 240 | func validStatus(s string) bool { |
| 241 | return s == "read" || s == "reading" || s == "want" |
| 242 | } |