includes/db/inventory_db.inc

   1 <?php
   2 /**********************************************************************
   3     Copyright (C) FrontAccounting, LLC.
   4         Released under the terms of the GNU General Public License, GPL,
   5         as published by the Free Software Foundation, either version 3
   6         of the License, or (at your option) any later version.
   7     This program is distributed in the hope that it will be useful,
   8     but WITHOUT ANY WARRANTY; without even the implied warranty of
   9     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  10     See the License here <http://www.gnu.org/licenses/gpl-3.0.html>.
  11 ***********************************************************************/
  12 function get_qoh_on_date($stock_id, $location=null, $date_=null, $exclude=0)
  13 {
  14     if ($date_ == null)
  15     {
  16         $sql = "SELECT SUM(qty) FROM ".TB_PREF."stock_moves
  17             WHERE stock_id=".db_escape($stock_id);
  18         $date_ = Today();
  19         $date = date2sql($date_);
  20     }
  21     else
  22     {
  23         $date = date2sql($date_);
  24         $sql = "SELECT SUM(qty) FROM ".TB_PREF."stock_moves
  25             WHERE stock_id=".db_escape($stock_id)."
  26             AND tran_date <= '$date'";
  27     }
  28
  29     if ($location != null)
  30         $sql .= " AND loc_code = ".db_escape($location);
  31
  32     $result = db_query($sql, "QOH calulcation failed");
  33
  34     $myrow = db_fetch_row($result);
  35     if ($exclude > 0)
  36     {
  37         $sql = "SELECT SUM(qty) FROM ".TB_PREF."stock_moves
  38             WHERE stock_id=".db_escape($stock_id)
  39             ." AND type=".db_escape($exclude)
  40             ." AND tran_date = '$date'";
  41
  42         $result = db_query($sql, "QOH calulcation failed");
  43         $myrow2 = db_fetch_row($result);
  44         if ($myrow2 !== false)
  45             $myrow[0] -= $myrow2[0];
  46     }
  47
  48     return $myrow[0];
  49 }
  50
  51 //--------------------------------------------------------------------------------------
  52
  53 function get_item_edit_info($stock_id)
  54 {
  55         $sql = "SELECT material_cost + labour_cost + overhead_cost AS standard_cost, units, decimals
  56                 FROM ".TB_PREF."stock_master,".TB_PREF."item_units
  57                 WHERE stock_id=".db_escape($stock_id)
  58                 ." AND ".TB_PREF."stock_master.units=".TB_PREF."item_units.abbr";
  59         $result = db_query($sql, "The standard cost cannot be retrieved");
  60
  61         return db_fetch($result);
  62 }
  63
  64 //--------------------------------------------------------------------------------------
  65
  66 function get_standard_cost($stock_id)
  67 {
  68         //Chaitanya : Compatibility with service items
  69         $sql = "SELECT (material_cost + labour_cost + overhead_cost) AS std_cost
  70                 FROM ".TB_PREF."stock_master s WHERE stock_id=".db_escape($stock_id);
  71         $result = db_query($sql, "The standard cost cannot be retrieved");
  72
  73         $myrow = db_fetch_row($result);
  74
  75         return $myrow[0];
  76 }
  77
  78 //--------------------------------------------------------------------------------------
  79
  80 function is_inventory_item($stock_id)
  81 {
  82         $sql = "SELECT stock_id FROM ".TB_PREF."stock_master
  83                 WHERE stock_id=".db_escape($stock_id)." AND mb_flag <> 'D'";
  84         $result = db_query($sql, "Cannot query is inventory item or not");
  85
  86         return db_num_rows($result) > 0;
  87 }
  88
  89 //-------------------------------------------------------------------
  90
  91 function last_negative_stock_begin_date($stock_id, $to)
  92 {
  93         $to = date2sql($to);
  94         $sql ="SET @q = 0";
  95         db_query($sql);
  96         $sql = "SET @flag = 0";
  97         db_query($sql);
  98         $sql = "SELECT SUM(qty), @q:= @q + qty, IF(@q < 0 AND @flag=0, @flag:=1,@flag:=0), IF(@q < 0 AND @flag=1, tran_date,'') AS begin_date
  99                 FROM ".TB_PREF."stock_moves
 100                 WHERE stock_id=".db_escape($stock_id)." AND tran_date<='$to'
 101                 AND qty <> 0
 102                 GROUP BY stock_id ORDER BY tran_date";
 103
 104         $result = db_query($sql, "The dstock moves could not be retrieved");
 105         $row = db_fetch_row($result);
 106         return $row[3];
 107 }
 108
 109 //-------------------------------------------------------------------
 110
 111 function get_already_delivered($stock_id, $location, $trans_no)
 112 {
 113         $sql = "SELECT ".TB_PREF."stock_moves.qty
 114                 FROM ".TB_PREF."stock_moves
 115                 WHERE ".TB_PREF."stock_moves.stock_id = ".db_escape($stock_id)."
 116                 AND ".TB_PREF."stock_moves.loc_code = ".db_escape($location)."
 117                 AND type=".ST_CUSTDELIVERY." AND trans_no=".db_escape($trans_no);
 118         $result = db_query($sql, "Could not get stock moves");
 119         $row = db_fetch_row($result);
 120         return $row[0];
 121 }
 122
 123 function last_negative_stock_trans_id($stock_id, $to)
 124 {
 125         $sql = "SELECT * from ".TB_PREF."stock_moves
 126                 WHERE stock_id=".db_escape($stock_id)."
 127                 AND qty <> 0 order by trans_id asc";
 128
 129         $result = db_query($sql, "The query on stock moves failed.");
 130
 131         $qty = 0;
 132         $flag = 0;
 133         $negative_trans_id = 1;
 134
 135         while ($myrow = db_fetch($result))
 136         {
 137                 $qty += $myrow['qty'];
 138                 if ($qty < 0 && $flag == 0)
 139                 {
 140                         $flag = 1;
 141                         $negative_trans_id = $myrow['trans_id'];
 142                 }
 143                 if ($qty >= 0)
 144                         $flag = 0;
 145         }
 146
 147         return $negative_trans_id;
 148 }
 149
 150 //-------------------------------------------------------------------
 151
 152 function get_deliveries_between($stock_id, $from, $to)
 153 {
 154         $from = date2sql($from);
 155         $to = date2sql($to);
 156         $sql = "SELECT SUM(-qty), SUM(-qty*standard_cost) FROM ".TB_PREF."stock_moves
 157                 WHERE type=".ST_CUSTDELIVERY." AND stock_id=".db_escape($stock_id)." AND
 158                         tran_date>='$from' AND tran_date<='$to' GROUP BY stock_id";
 159
 160         $result = db_query($sql, "The deliveries could not be updated");
 161         return db_fetch_row($result);
 162 }
 163
 164 function get_deliveries_from_trans($stock_id, $from)
 165 {
 166         // -ve qty is delivery either by ST_CUSTDELIVERY or inventory adjustment
 167         $sql = "SELECT SUM(-qty), SUM(-qty*standard_cost) FROM ".TB_PREF."stock_moves
 168                 WHERE stock_id=".db_escape($stock_id)." AND qty < 0 AND
 169                         trans_id>='$from' GROUP BY stock_id";
 170         $result = db_query($sql, "The deliveries could not be updated");
 171         $row = db_fetch_row($result);
 172
 173         //return $row;
 174
 175         // Get Std cost of previsous transaction before the cut-over delivery
 176         // This is useful to get inventory valuation
 177         //Chaitanya : Corrected
 178         /*$sql = "SELECT max( `trans_id` )
 179                         FROM ".TB_PREF."stock_moves
 180                         WHERE stock_id = ".db_escape($stock_id)."
 181                         AND trans_id<'$from'";
 182         $result = db_query($sql, "The deliveries could not be updated");
 183         $trans = db_fetch_row($result);
 184         $prev_trans = $trans[0];*/
 185
 186         $sql = "SELECT standard_cost FROM ".TB_PREF."stock_moves
 187                 WHERE stock_id=".db_escape($stock_id)
 188                         ." AND trans_id ='$from'";
 189         $result = db_query($sql, "The deliveries could not be updated");
 190         $cost = db_fetch_row($result);
 191
 192         // Adjusting QOH valuation
 193         $sql = "SELECT SUM(qty) FROM ".TB_PREF."stock_moves
 194                 WHERE stock_id=".db_escape($stock_id)." AND
 195                         trans_id<'$from' GROUP BY stock_id";
 196         $result = db_query($sql, "The deliveries could not be updated");
 197         $qoh = db_fetch_row($result);
 198
 199         $qty = $row[0] - $qoh[0]; //Qoh is minus from delivered in -ve
 200         $final_cost = $row[1] - $qoh[0]*$cost[0];
 201
 202         return array($qty,$final_cost);
 203 }
 204
 205 function get_purchases_from_trans($stock_id, $from)
 206 {
 207         // Calculate All inward stock moves i.e. qty > 0
 208         $sql = "SELECT SUM(qty), SUM(qty*standard_cost) FROM ".TB_PREF."stock_moves
 209                 WHERE stock_id=".db_escape($stock_id)." AND qty > 0 AND
 210                         trans_id>'$from' GROUP BY stock_id";
 211         $result = db_query($sql, "Could not get get_purchases_from_trans");
 212         $row = db_fetch_row($result);
 213
 214         return $row;
 215 }
 216
 217 //-------------------------------------------------------------------
 218 /* Original Code V0 Leave as is a while
 219 function adjust_deliveries_v0($stock_id, $material_cost, $to)
 220 {
 221         if (!is_inventory_item($stock_id))
 222                 return;
 223         $from = last_negative_stock_begin_date($stock_id, $to);
 224         if ($from == false || $from == "")
 225                 return;
 226         $from = sql2date($from);
 227         $row = get_deliveries_between($stock_id, $from, $to);
 228         if ($row == false)
 229                 return;
 230         $old_cost = $row[1];
 231         $new_cost = $row[0] * $material_cost;
 232         $diff = $new_cost - $old_cost;
 233         if ($diff != 0)
 234         {
 235                 $update_no = get_next_trans_no(ST_COSTUPDATE);
 236                 if (!is_date_in_fiscalyear($to))
 237                         $to = end_fiscalyear();
 238
 239                 $stock_gl_code = get_stock_gl_code($stock_id);
 240
 241                 $memo_ = sprintf(_("Cost was %s changed to %s for item '%s'"),
 242                         $old_cost, $new_cost, $stock_id);
 243                 add_gl_trans_std_cost(ST_COSTUPDATE, $update_no, $to, $stock_gl_code["cogs_account"],
 244                         $stock_gl_code["dimension_id"], $stock_gl_code["dimension2_id"], $memo_, $diff);
 245
 246                 add_gl_trans_std_cost(ST_COSTUPDATE, $update_no, $to, $stock_gl_code["inventory_account"],
 247                         0, 0, $memo_, -$diff);
 248                 add_audit_trail(ST_COSTUPDATE, $update_no, $to);
 249         }
 250 }
 251 */
 252 //New written function
 253 function adjust_deliveries($stock_id, $material_cost, $to)
 254 {
 255         if (!is_inventory_item($stock_id))
 256                 return;
 257
 258         $from = last_negative_stock_trans_id($stock_id, $to);
 259         if ($from == false || $from == "")
 260                 return;
 261
 262         $row = get_deliveries_from_trans($stock_id, $from);
 263
 264         if ($row == false)
 265                 return;
 266         $old_sales_cost = $row[1];
 267         $new_sales_cost = $row[0] * $material_cost;
 268         $sales_diff = $new_sales_cost - $old_sales_cost;
 269
 270         $row = get_purchases_from_trans($stock_id, $from);
 271         $purchase_diff = 0;
 272         $old_purchase_cost = 0;
 273         if ($row != false)
 274         {
 275                 $old_purchase_cost = $row[1];
 276                 $new_purchase_cost = $row[0] * $material_cost;
 277                 $purchase_diff = $new_purchase_cost - $old_purchase_cost;
 278         }
 279
 280         $diff =  $sales_diff - $purchase_diff;
 281
 282         if ($diff != 0)
 283         {
 284                 $update_no = get_next_trans_no(ST_COSTUPDATE);
 285                 if (!is_date_in_fiscalyear($to))
 286                         $to = end_fiscalyear();
 287
 288                 $stock_gl_code = get_stock_gl_code($stock_id);
 289
 290                 $dec = user_price_dec();
 291                 $old_cost = -round2($old_sales_cost-$old_purchase_cost,$dec);
 292                 $new_cost = -round2($new_sales_cost-$new_purchase_cost,$dec);
 293
 294                 $memo_ = _("Cost was ") . $old_cost. _(" changed to ") . $new_cost . _(" for item ")."'$stock_id'";
 295                 add_gl_trans_std_cost(ST_COSTUPDATE, $update_no, $to, $stock_gl_code["cogs_account"],
 296                         $stock_gl_code["dimension_id"], $stock_gl_code["dimension2_id"], $memo_, $diff);
 297
 298                 add_gl_trans_std_cost(ST_COSTUPDATE, $update_no, $to, $stock_gl_code["inventory_account"], 0, 0, $memo_,
 299                         -$diff);
 300                 add_audit_trail(ST_COSTUPDATE, $update_no, $to);
 301         }
 302 }
 303
 304 function get_stock_gl_code($stock_id)
 305 {
 306         /*Gets the GL Codes relevant to the item account  */
 307         //Chaitanya : Updated to also provide mb_flag
 308         $sql = "SELECT mb_flag, inventory_account, cogs_account,
 309                 adjustment_account, sales_account, assembly_account, dimension_id, dimension2_id FROM
 310                 ".TB_PREF."stock_master WHERE stock_id = ".db_escape($stock_id);
 311
 312         $get = db_query($sql,"retreive stock gl code");
 313         return db_fetch($get);
 314 }
 315
 316 //-----------------------------------------------------------------------------------------
 317 //Chaitanya : New Function handle negative stock effect
 318 //Called in add_stock_move
 319 function handle_negative_inventory($stock_id, $quantity, $standard_cost, $date_)
 320 {
 321         //Chaitanya : If negative adjustment result in negative or zero inventory
 322         //then difference should be adjusted
 323         $qoh = get_qoh_on_date($stock_id);
 324
 325         if ($qoh + $quantity <= 0 && $qoh > 0) //Positive inventory turning zero/negative
 326         {
 327                 global $Refs;
 328
 329                 $id = get_next_trans_no(ST_JOURNAL);
 330                 $ref = $Refs->get_next(ST_JOURNAL);
 331                 $diff = get_standard_cost($stock_id) - $standard_cost;
 332
 333                 if ($diff !=0)
 334                 {
 335                         $stock_gl_code = get_stock_gl_code($stock_id);
 336                         $memo = _("Zero/negative inventory handling");
 337                         //Reverse the inventory effect if $qoh <=0
 338                         add_gl_trans_std_cost(ST_JOURNAL, $id, $date_,
 339                                 $stock_gl_code["inventory_account"],
 340                                 $stock_gl_code['dimension_id'], $stock_gl_code['dimension2_id'], $memo,
 341                                 -$qoh * $diff);
 342                         //GL Posting to inventory adjustment account
 343                         add_gl_trans_std_cost(ST_JOURNAL, $id, $date_,
 344                                 $stock_gl_code["adjustment_account"],
 345                                 $stock_gl_code['dimension_id'], $stock_gl_code['dimension2_id'], $memo,
 346                                 $qoh * $diff);
 347
 348                         add_audit_trail(ST_JOURNAL, $id, $date_);
 349                         add_comments(ST_JOURNAL, $id, $date_, $memo);
 350                         $Refs->save(ST_JOURNAL, $id, $ref);
 351                 }
 352         }
 353 }
 354
 355 //--------------------------------------------------------------------------------------
 356
 357 // $date_ - display / non-sql date
 358 // $std_cost - in HOME currency
 359 // $show_or_hide - wil this move be visible in reports, etc
 360 // $price - in $person_id's currency
 361
 362 function add_stock_move($type, $stock_id, $trans_no, $location,
 363     $date_, $reference, $quantity, $std_cost, $person_id=0, $show_or_hide=1,
 364     $price=0, $discount_percent=0, $error_msg="")
 365 {
 366         // Chaitanya : Removed following restriction considering WO issues
 367         // Voiding issues and productions with Service items can not get the
 368         // Service items compatibility
 369         // do not add a stock move if it's a non-inventory item
 370         //if (!is_inventory_item($stock_id))
 371                 //return null;
 372
 373         $date = date2sql($date_);
 374
 375         $sql = "INSERT INTO ".TB_PREF."stock_moves (stock_id, trans_no, type, loc_code,
 376                 tran_date, person_id, reference, qty, standard_cost, visible, price,
 377                 discount_percent) VALUES (".db_escape($stock_id)
 378                 .", ".db_escape($trans_no).", ".db_escape($type)
 379                 .",     ".db_escape($location).", '$date', "
 380                 .db_escape($person_id).", ".db_escape($reference).", "
 381                 .db_escape($quantity).", ".db_escape($std_cost).","
 382                 .db_escape($show_or_hide).", "
 383                 .db_escape($price).", ".db_escape($discount_percent).")";
 384
 385         if ($error_msg == "")
 386                 $error_msg = "The stock movement record cannot be inserted";
 387
 388         db_query($sql, $error_msg);
 389
 390         return db_insert_id();
 391 }
 392
 393 //Chaitanya : Added function
 394 function update_stock_move($type, $trans_no, $stock_id, $cost)
 395 {
 396         $sql = "UPDATE ".TB_PREF."stock_moves SET standard_cost=".db_escape($cost)
 397                         ." WHERE type=".db_escape($type)
 398                         ."      AND trans_no=".db_escape($trans_no)
 399                         ."      AND stock_id=".db_escape($stock_id);
 400         db_query($sql, "The stock movement standard_cost cannot be updated");
 401 }
 402
 403 function update_stock_move_pid($type, $type_no, $stock_id, $pid, $cost)
 404 {
 405         $sql = "UPDATE ".TB_PREF."stock_moves SET standard_cost=".db_escape($cost)
 406                 ." WHERE type=".db_escape($type)
 407                 ."      AND trans_no=".db_escape($type_no)
 408                 ."      AND stock_id=".db_escape($stock_id)
 409                 ."  AND person_id = ".db_escape($pid);
 410         db_query($sql, "The stock movement standard_cost cannot be updated");
 411 }
 412
 413 //--------------------------------------------------------------------------------------------------
 414
 415 function get_stock_moves($type, $type_no, $visible=false)
 416 {
 417         $sql = "SELECT ".TB_PREF."stock_moves.*, ".TB_PREF."stock_master.description, "
 418                 .TB_PREF."stock_master.units,".TB_PREF."locations.location_name,"
 419                 .TB_PREF."stock_master.material_cost + "
 420                         .TB_PREF."stock_master.labour_cost + "
 421                         .TB_PREF."stock_master.overhead_cost AS FixedStandardCost
 422                 FROM ".TB_PREF."stock_moves,".TB_PREF."locations,".TB_PREF."stock_master
 423                 WHERE ".TB_PREF."stock_moves.stock_id = ".TB_PREF."stock_master.stock_id
 424                 AND ".TB_PREF."locations.loc_code=".TB_PREF."stock_moves.loc_code
 425                 AND type=".db_escape($type)." AND trans_no=".db_escape($type_no)." ORDER BY trans_id";
 426         if ($visible)
 427                 $sql .= " AND ".TB_PREF."stock_moves.visible=1";
 428
 429         return db_query($sql, "Could not get stock moves");
 430 }
 431
 432 //--------------------------------------------------------------------------------------------------
 433
 434 function void_stock_move($type, $type_no)
 435 {
 436     //Chaitanya : Reversing stock move rather than voiding as it is hazardous to lose stock movement trail with respect to costing
 437     /*$sql = "UPDATE ".TB_PREF."stock_moves SET qty=0, price=0, discount_percent=0,
 438         standard_cost=0 WHERE type=".db_escape($type)." AND trans_no=".db_escape($type_no);
 439
 440     db_query($sql, "Could not void stock moves"); */
 441
 442     $sql = "SELECT * from ".TB_PREF."stock_moves WHERE type=".db_escape($type)." AND trans_no=".db_escape($type_no);
 443     $result = db_query($sql, "Could not void stock moves");
 444     while ($row = db_fetch($result))
 445     {
 446                 //Skip cost averaging of service items
 447                 if (is_inventory_item($row["stock_id"]))
 448                 {
 449                         // The cost has to be adjusted.
 450                         //Chaitanya : Transaction rates are stored either as price or standard_cost depending
 451                         //on types
 452                         $types = array(ST_SUPPCREDIT);
 453                         if (in_array($type,$types))
 454                                 $trans_rate = $row["price"];
 455                         else
 456                                 $trans_rate = $row["standard_cost"];
 457
 458                         update_average_material_cost(0, $row["stock_id"],
 459                                 $trans_rate, -$row["qty"], sql2date($row["tran_date"]));
 460                 }
 461
 462                 //Post stock move for service items also
 463         add_stock_move($type, $row["stock_id"], $type_no, $row["loc_code"],
 464                 sql2date($row["tran_date"]), $row["reference"], -$row["qty"]
 465                         , $row["standard_cost"], $row["person_id"], $row["visible"],
 466                 $row["price"], $row["discount_percent"]);
 467     }
 468 }
 469
 470 //--------------------------------------------------------------------------------------------------
 471
 472 function get_location_name($loc_code)
 473 {
 474         $sql = "SELECT location_name FROM ".TB_PREF."locations WHERE loc_code="
 475                 .db_escape($loc_code);
 476
 477         $result = db_query($sql, "could not retreive the location name for $loc_code");
 478
 479         if (db_num_rows($result) == 1)
 480         {
 481                 $row = db_fetch_row($result);
 482                 return $row[0];
 483         }
 484
 485         display_db_error("could not retreive the location name for $loc_code", $sql, true);
 486 }
 487
 488 //--------------------------------------------------------------------------------------------------
 489
 490
 491 ?>