| 1 | ! Favorites management module |
| 2 | ! Handles favorites.json read/write and favorite workspace management |
| 3 | |
| 4 | module favorites_module |
| 5 | use iso_fortran_env, only: int32 |
| 6 | use config_module, only: get_config_dir, ensure_config_dir |
| 7 | implicit none |
| 8 | private |
| 9 | |
| 10 | public :: favorite_t, favorites_load, favorites_save, favorites_add, favorites_remove |
| 11 | public :: favorites_exists, favorites_get_path |
| 12 | |
| 13 | integer, parameter :: MAX_PATH_LEN = 512 |
| 14 | integer, parameter :: MAX_LABEL_LEN = 128 |
| 15 | integer, parameter :: MAX_FAVORITES = 50 |
| 16 | |
| 17 | type :: favorite_t |
| 18 | character(len=MAX_PATH_LEN) :: path = "" |
| 19 | character(len=MAX_LABEL_LEN) :: label = "" |
| 20 | character(len=32) :: added = "" ! ISO 8601 timestamp |
| 21 | logical :: pinned = .false. |
| 22 | end type favorite_t |
| 23 | |
| 24 | contains |
| 25 | |
| 26 | !> Get path to favorites.json |
| 27 | subroutine favorites_get_path(favorites_file) |
| 28 | character(len=:), allocatable, intent(out) :: favorites_file |
| 29 | character(len=:), allocatable :: config_dir |
| 30 | |
| 31 | call get_config_dir(config_dir) |
| 32 | favorites_file = trim(config_dir) // '/favorites.json' |
| 33 | end subroutine favorites_get_path |
| 34 | |
| 35 | !> Check if favorites.json exists |
| 36 | function favorites_exists() result(exists) |
| 37 | logical :: exists |
| 38 | character(len=:), allocatable :: favorites_file |
| 39 | integer :: unit, ios |
| 40 | |
| 41 | call favorites_get_path(favorites_file) |
| 42 | open(newunit=unit, file=favorites_file, status='old', iostat=ios) |
| 43 | exists = (ios == 0) |
| 44 | if (exists) close(unit) |
| 45 | end function favorites_exists |
| 46 | |
| 47 | !> Load favorites from favorites.json |
| 48 | subroutine favorites_load(favorites, count, success) |
| 49 | type(favorite_t), allocatable, intent(out) :: favorites(:) |
| 50 | integer, intent(out) :: count |
| 51 | logical, intent(out) :: success |
| 52 | character(len=:), allocatable :: favorites_file |
| 53 | character(len=1024) :: line |
| 54 | integer :: unit, ios, i |
| 55 | logical :: in_favorites, reading_entry |
| 56 | |
| 57 | success = .false. |
| 58 | count = 0 |
| 59 | allocate(favorites(MAX_FAVORITES)) |
| 60 | |
| 61 | ! Ensure config directory exists |
| 62 | call ensure_config_dir(success) |
| 63 | if (.not. success) return |
| 64 | |
| 65 | call favorites_get_path(favorites_file) |
| 66 | |
| 67 | ! Open file |
| 68 | open(newunit=unit, file=favorites_file, status='old', iostat=ios) |
| 69 | if (ios /= 0) then |
| 70 | ! File doesn't exist - return empty list |
| 71 | success = .true. |
| 72 | count = 0 |
| 73 | return |
| 74 | end if |
| 75 | |
| 76 | ! Simple JSON parsing (look for "path", "label", "added", "pinned" fields) |
| 77 | in_favorites = .false. |
| 78 | reading_entry = .false. |
| 79 | i = 0 |
| 80 | |
| 81 | do |
| 82 | read(unit, '(A)', iostat=ios) line |
| 83 | if (ios /= 0) exit |
| 84 | |
| 85 | ! Trim whitespace |
| 86 | line = adjustl(line) |
| 87 | |
| 88 | ! Check if we're in the favorites array |
| 89 | if (index(line, '"favorites"') > 0) then |
| 90 | in_favorites = .true. |
| 91 | cycle |
| 92 | end if |
| 93 | |
| 94 | if (.not. in_favorites) cycle |
| 95 | |
| 96 | ! Look for start of entry |
| 97 | if (index(line, '{') > 0 .and. .not. reading_entry) then |
| 98 | reading_entry = .true. |
| 99 | i = i + 1 |
| 100 | if (i > MAX_FAVORITES) exit |
| 101 | ! Initialize entry |
| 102 | favorites(i)%path = "" |
| 103 | favorites(i)%label = "" |
| 104 | favorites(i)%added = "" |
| 105 | favorites(i)%pinned = .false. |
| 106 | cycle |
| 107 | end if |
| 108 | |
| 109 | if (reading_entry) then |
| 110 | ! Parse fields |
| 111 | if (index(line, '"path"') > 0) then |
| 112 | call extract_json_string(line, favorites(i)%path) |
| 113 | else if (index(line, '"label"') > 0) then |
| 114 | call extract_json_string(line, favorites(i)%label) |
| 115 | else if (index(line, '"added"') > 0) then |
| 116 | call extract_json_string(line, favorites(i)%added) |
| 117 | else if (index(line, '"pinned"') > 0) then |
| 118 | favorites(i)%pinned = (index(line, 'true') > 0) |
| 119 | end if |
| 120 | |
| 121 | ! Check for end of entry |
| 122 | if (index(line, '}') > 0) then |
| 123 | reading_entry = .false. |
| 124 | end if |
| 125 | end if |
| 126 | end do |
| 127 | |
| 128 | close(unit) |
| 129 | count = i |
| 130 | success = .true. |
| 131 | end subroutine favorites_load |
| 132 | |
| 133 | !> Save favorites to favorites.json |
| 134 | subroutine favorites_save(favorites, count, success) |
| 135 | type(favorite_t), intent(in) :: favorites(:) |
| 136 | integer, intent(in) :: count |
| 137 | logical, intent(out) :: success |
| 138 | character(len=:), allocatable :: favorites_file |
| 139 | integer :: unit, ios, i |
| 140 | |
| 141 | success = .false. |
| 142 | |
| 143 | ! Ensure config directory exists |
| 144 | call ensure_config_dir(success) |
| 145 | if (.not. success) return |
| 146 | |
| 147 | call favorites_get_path(favorites_file) |
| 148 | |
| 149 | ! Write JSON file |
| 150 | open(newunit=unit, file=favorites_file, status='replace', iostat=ios) |
| 151 | if (ios /= 0) return |
| 152 | |
| 153 | write(unit, '(A)') '{' |
| 154 | write(unit, '(A)') ' "version": "1.0",' |
| 155 | write(unit, '(A)') ' "favorites": [' |
| 156 | |
| 157 | do i = 1, count |
| 158 | write(unit, '(A)') ' {' |
| 159 | write(unit, '(A)') ' "path": "' // trim(favorites(i)%path) // '",' |
| 160 | write(unit, '(A)') ' "label": "' // trim(favorites(i)%label) // '",' |
| 161 | write(unit, '(A)') ' "added": "' // trim(favorites(i)%added) // '",' |
| 162 | if (favorites(i)%pinned) then |
| 163 | write(unit, '(A)') ' "pinned": true' |
| 164 | else |
| 165 | write(unit, '(A)') ' "pinned": false' |
| 166 | end if |
| 167 | |
| 168 | if (i < count) then |
| 169 | write(unit, '(A)') ' },' |
| 170 | else |
| 171 | write(unit, '(A)') ' }' |
| 172 | end if |
| 173 | end do |
| 174 | |
| 175 | write(unit, '(A)') ' ]' |
| 176 | write(unit, '(A)') '}' |
| 177 | |
| 178 | close(unit) |
| 179 | success = .true. |
| 180 | end subroutine favorites_save |
| 181 | |
| 182 | !> Add a favorite workspace |
| 183 | subroutine favorites_add(path, label, success) |
| 184 | character(len=*), intent(in) :: path |
| 185 | character(len=*), intent(in) :: label |
| 186 | logical, intent(out) :: success |
| 187 | type(favorite_t), allocatable :: favorites(:) |
| 188 | integer :: count, i |
| 189 | character(len=32) :: timestamp |
| 190 | |
| 191 | success = .false. |
| 192 | |
| 193 | ! Load existing favorites |
| 194 | call favorites_load(favorites, count, success) |
| 195 | if (.not. success) return |
| 196 | |
| 197 | ! Check if path already exists |
| 198 | do i = 1, count |
| 199 | if (trim(favorites(i)%path) == trim(path)) then |
| 200 | ! Already exists - don't add duplicate |
| 201 | success = .true. |
| 202 | return |
| 203 | end if |
| 204 | end do |
| 205 | |
| 206 | ! Check if we've reached max favorites |
| 207 | if (count >= MAX_FAVORITES) then |
| 208 | success = .false. |
| 209 | return |
| 210 | end if |
| 211 | |
| 212 | ! Add new favorite |
| 213 | count = count + 1 |
| 214 | favorites(count)%path = trim(path) |
| 215 | favorites(count)%label = trim(label) |
| 216 | call get_current_timestamp(timestamp) |
| 217 | favorites(count)%added = trim(timestamp) |
| 218 | favorites(count)%pinned = .false. |
| 219 | |
| 220 | ! Save |
| 221 | call favorites_save(favorites, count, success) |
| 222 | end subroutine favorites_add |
| 223 | |
| 224 | !> Remove a favorite by index |
| 225 | subroutine favorites_remove(index, success) |
| 226 | integer, intent(in) :: index |
| 227 | logical, intent(out) :: success |
| 228 | type(favorite_t), allocatable :: favorites(:), temp(:) |
| 229 | integer :: count, i, j |
| 230 | |
| 231 | success = .false. |
| 232 | |
| 233 | ! Load existing favorites |
| 234 | call favorites_load(favorites, count, success) |
| 235 | if (.not. success) return |
| 236 | |
| 237 | ! Check valid index |
| 238 | if (index < 1 .or. index > count) then |
| 239 | success = .false. |
| 240 | return |
| 241 | end if |
| 242 | |
| 243 | ! Create new array without the removed entry |
| 244 | allocate(temp(MAX_FAVORITES)) |
| 245 | j = 0 |
| 246 | do i = 1, count |
| 247 | if (i /= index) then |
| 248 | j = j + 1 |
| 249 | temp(j) = favorites(i) |
| 250 | end if |
| 251 | end do |
| 252 | |
| 253 | ! Save |
| 254 | call favorites_save(temp, j, success) |
| 255 | deallocate(temp) |
| 256 | end subroutine favorites_remove |
| 257 | |
| 258 | !> Extract string value from JSON line (simple parser) |
| 259 | subroutine extract_json_string(line, value) |
| 260 | character(len=*), intent(in) :: line |
| 261 | character(len=*), intent(out) :: value |
| 262 | integer :: start_quote, end_quote, colon_pos |
| 263 | |
| 264 | value = "" |
| 265 | |
| 266 | ! Find colon |
| 267 | colon_pos = index(line, ':') |
| 268 | if (colon_pos == 0) return |
| 269 | |
| 270 | ! Find first quote after colon |
| 271 | start_quote = index(line(colon_pos:), '"') |
| 272 | if (start_quote == 0) return |
| 273 | start_quote = start_quote + colon_pos |
| 274 | |
| 275 | ! Find second quote |
| 276 | end_quote = index(line(start_quote+1:), '"') |
| 277 | if (end_quote == 0) return |
| 278 | end_quote = end_quote + start_quote |
| 279 | |
| 280 | ! Extract string |
| 281 | if (end_quote > start_quote) then |
| 282 | value = line(start_quote+1:end_quote-1) |
| 283 | end if |
| 284 | end subroutine extract_json_string |
| 285 | |
| 286 | !> Get current timestamp in ISO 8601 format |
| 287 | subroutine get_current_timestamp(timestamp) |
| 288 | character(len=*), intent(out) :: timestamp |
| 289 | integer :: values(8) |
| 290 | |
| 291 | call date_and_time(values=values) |
| 292 | |
| 293 | ! Format: YYYY-MM-DDTHH:MM:SSZ |
| 294 | write(timestamp, '(I4.4,A,I2.2,A,I2.2,A,I2.2,A,I2.2,A,I2.2,A)') & |
| 295 | values(1), '-', values(2), '-', values(3), 'T', & |
| 296 | values(5), ':', values(6), ':', values(7), 'Z' |
| 297 | end subroutine get_current_timestamp |
| 298 | |
| 299 | end module favorites_module |
| 300 |