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         $sql = "SELECT (material_cost + labour_cost + overhead_cost) AS std_cost
  69                 FROM ".TB_PREF."stock_master s WHERE stock_id=".db_escape($stock_id);
  70         $result = db_query($sql, "The standard cost cannot be retrieved");
  71
  72         $myrow = db_fetch_row($result);
  73
  74         return $myrow[0];
  75 }
  76
  77 //--------------------------------------------------------------------------------------
  78
  79 function is_inventory_item($stock_id)
  80 {
  81         $sql = "SELECT stock_id FROM ".TB_PREF."stock_master
  82                 WHERE stock_id=".db_escape($stock_id)." AND mb_flag <> 'D'";
  83         $result = db_query($sql, "Cannot query is inventory item or not");
  84
  85         return db_num_rows($result) > 0;
  86 }
  87
  88 //-------------------------------------------------------------------
  89
  90 function last_negative_stock_begin_date($stock_id, $to)
  91 {
  92         $to = date2sql($to);
  93         $sql ="SET @q = 0";
  94         db_query($sql);
  95         $sql = "SET @flag = 0";
  96         db_query($sql);
  97         $sql = "SELECT SUM(qty), @q:= @q + qty, IF(@q < 0 AND @flag=0, @flag:=1,@flag:=0), IF(@q < 0 AND @flag=1, tran_date,'') AS begin_date
  98                 FROM ".TB_PREF."stock_moves
  99                 WHERE stock_id=".db_escape($stock_id)." AND tran_date<='$to'
 100                 AND qty <> 0
 101                 GROUP BY stock_id ORDER BY tran_date";
 102
 103         $result = db_query($sql, "The dstock moves could not be retrieved");
 104         $row = db_fetch_row($result);
 105         return $row[3];
 106 }
 107
 108 //-------------------------------------------------------------------
 109
 110 function get_already_delivered($stock_id, $location, $trans_no)
 111 {
 112         $sql = "SELECT ".TB_PREF."stock_moves.qty
 113                 FROM ".TB_PREF."stock_moves
 114                 WHERE ".TB_PREF."stock_moves.stock_id = ".db_escape($stock_id)."
 115                 AND ".TB_PREF."stock_moves.loc_code = ".db_escape($location)."
 116                 AND type=".ST_CUSTDELIVERY." AND trans_no=".db_escape($trans_no);
 117         $result = db_query($sql, "Could not get stock moves");
 118         $row = db_fetch_row($result);
 119         return $row[0];
 120 }
 121
 122 function last_negative_stock_trans_id($stock_id, $to)
 123 {
 124         $sql = "SELECT * from ".TB_PREF."stock_moves
 125                 WHERE stock_id=".db_escape($stock_id)."
 126                 AND qty <> 0 order by trans_id asc";
 127
 128         $result = db_query($sql, "The query on stock moves failed.");
 129
 130         $qty = 0;
 131         $flag = 0;
 132         $negative_trans_id = -1;
 133
 134         while ($myrow = db_fetch($result))
 135         {
 136                 $qty += $myrow['qty'];
 137                 if ($qty < 0 && $flag == 0)
 138                 {
 139                         $flag = 1;
 140                         $negative_trans_id = $myrow['trans_id'];
 141                 }
 142                 if ($qty >= 0)
 143                         $flag = 0;
 144         }
 145
 146         if ($flag == 1)
 147                 return $negative_trans_id;
 148         else
 149                 return false;
 150 }
 151
 152 //-------------------------------------------------------------------
 153
 154 function get_deliveries_between($stock_id, $from, $to)
 155 {
 156         $from = date2sql($from);
 157         $to = date2sql($to);
 158         $sql = "SELECT SUM(-qty), SUM(-qty*standard_cost) FROM ".TB_PREF."stock_moves
 159                 WHERE type=".ST_CUSTDELIVERY." AND stock_id=".db_escape($stock_id)." AND
 160                         tran_date>='$from' AND tran_date<='$to' GROUP BY stock_id";
 161
 162         $result = db_query($sql, "The deliveries could not be updated");
 163         return db_fetch_row($result);
 164 }
 165
 166 function get_deliveries_from_trans($stock_id, $from)
 167 {
 168         // -ve qty is delivery either by ST_CUSTDELIVERY or inventory adjustment
 169         $sql = "SELECT SUM(-qty), SUM(-qty*standard_cost) FROM ".TB_PREF."stock_moves
 170                 WHERE stock_id=".db_escape($stock_id)." AND qty < 0 AND
 171                         trans_id>='$from' GROUP BY stock_id";
 172         $result = db_query($sql, "The deliveries could not be updated");
 173         $row = db_fetch_row($result);
 174
 175         $sql = "SELECT standard_cost FROM ".TB_PREF."stock_moves
 176                 WHERE stock_id=".db_escape($stock_id)
 177                         ." AND trans_id ='$from'";
 178         $result = db_query($sql, "The deliveries could not be updated");
 179         $cost = db_fetch_row($result);
 180
 181         // Adjusting QOH valuation
 182         $sql = "SELECT SUM(qty) FROM ".TB_PREF."stock_moves
 183                 WHERE stock_id=".db_escape($stock_id)." AND
 184                         trans_id<'$from' GROUP BY stock_id";
 185         $result = db_query($sql, "The deliveries could not be updated");
 186         $qoh = db_fetch_row($result);
 187
 188         $qty = $row[0] - $qoh[0]; //QOH prior to -ve stock is subtracted\r
 189         $final_cost = $row[1] - $qoh[0]*$cost[0];
 190
 191         return array($qty,$final_cost);
 192 }
 193
 194 function get_purchases_from_trans($stock_id, $from)
 195 {
 196         // Calculate All inward stock moves i.e. qty > 0
 197         $sql = "SELECT SUM(qty), SUM(qty*standard_cost) FROM ".TB_PREF."stock_moves
 198                 WHERE stock_id=".db_escape($stock_id)." AND qty > 0 AND
 199                         trans_id>'$from' GROUP BY stock_id";
 200         $result = db_query($sql, "Could not get get_purchases_from_trans");
 201         $row = db_fetch_row($result);
 202
 203         return $row;
 204 }
 205
 206 //-------------------------------------------------------------------
 207
 208 function adjust_deliveries($stock_id, $material_cost, $to)
 209 {
 210         if (!is_inventory_item($stock_id))
 211                 return;
 212
 213         $from = last_negative_stock_trans_id($stock_id, $to);
 214         if ($from == false || $from == -1)
 215                 return;
 216
 217         $row = get_deliveries_from_trans($stock_id, $from);
 218
 219         if ($row == false)
 220                 return;
 221         $old_sales_cost = $row[1];
 222         $new_sales_cost = $row[0] * $material_cost;
 223         $sales_diff = $new_sales_cost - $old_sales_cost;
 224
 225         $row = get_purchases_from_trans($stock_id, $from);
 226         $purchase_diff = 0;
 227         $old_purchase_cost = 0;
 228         if ($row != false)
 229         {
 230                 $old_purchase_cost = $row[1];
 231                 $new_purchase_cost = $row[0] * $material_cost;
 232                 $purchase_diff = $new_purchase_cost - $old_purchase_cost;
 233         }
 234
 235         $diff =  $sales_diff - $purchase_diff;
 236
 237         if ($diff != 0)
 238         {
 239                 $update_no = get_next_trans_no(ST_COSTUPDATE);
 240                 if (!is_date_in_fiscalyear($to))
 241                         $to = end_fiscalyear();
 242
 243                 $stock_gl_code = get_stock_gl_code($stock_id);
 244
 245                 $dec = user_price_dec();
 246                 $old_cost = -round2($old_sales_cost-$old_purchase_cost,$dec);
 247                 $new_cost = -round2($new_sales_cost-$new_purchase_cost,$dec);
 248
 249                 $memo_ = _("Cost was ") . $old_cost. _(" changed to ") . $new_cost . _(" for item ")."'$stock_id'";
 250                 add_gl_trans_std_cost(ST_COSTUPDATE, $update_no, $to, $stock_gl_code["cogs_account"],
 251                         $stock_gl_code["dimension_id"], $stock_gl_code["dimension2_id"], $memo_, $diff);
 252
 253                 add_gl_trans_std_cost(ST_COSTUPDATE, $update_no, $to, $stock_gl_code["inventory_account"], 0, 0, $memo_,
 254                         -$diff);
 255                 add_audit_trail(ST_COSTUPDATE, $update_no, $to);
 256         }
 257 }
 258
 259 function get_stock_gl_code($stock_id)
 260 {
 261         /*Gets the GL Codes relevant to the item account  */
 262         $sql = "SELECT mb_flag, inventory_account, cogs_account,
 263                 adjustment_account, sales_account, assembly_account, dimension_id, dimension2_id FROM
 264                 ".TB_PREF."stock_master WHERE stock_id = ".db_escape($stock_id);
 265
 266         $get = db_query($sql,"retreive stock gl code");
 267         return db_fetch($get);
 268 }
 269
 270 //-----------------------------------------------------------------------------------------
 271
 272 function handle_negative_inventory($stock_id, $quantity, $standard_cost, $date_)
 273 {
 274         //If negative adjustment result in negative or zero inventory \r
 275         //then difference should be adjusted
 276         $qoh = get_qoh_on_date($stock_id);
 277
 278         if ($qoh + $quantity <= 0 && $qoh > 0) //Positive inventory turning zero/negative
 279         {
 280                 global $Refs;
 281
 282                 $id = get_next_trans_no(ST_JOURNAL);
 283                 $ref = $Refs->get_next(ST_JOURNAL);
 284                 $diff = get_standard_cost($stock_id) - $standard_cost;
 285
 286                 if ($diff !=0)
 287                 {
 288                         $stock_gl_code = get_stock_gl_code($stock_id);
 289                         $memo = _("Zero/negative inventory handling");
 290                         //Reverse the inventory effect if $qoh <=0
 291                         add_gl_trans_std_cost(ST_JOURNAL, $id, $date_,
 292                                 $stock_gl_code["inventory_account"],
 293                                 $stock_gl_code['dimension_id'], $stock_gl_code['dimension2_id'], $memo,
 294                                 -$qoh * $diff);
 295                         //GL Posting to inventory adjustment account
 296                         add_gl_trans_std_cost(ST_JOURNAL, $id, $date_,
 297                                 $stock_gl_code["adjustment_account"],
 298                                 $stock_gl_code['dimension_id'], $stock_gl_code['dimension2_id'], $memo,
 299                                 $qoh * $diff);
 300
 301                         add_audit_trail(ST_JOURNAL, $id, $date_);
 302                         add_comments(ST_JOURNAL, $id, $date_, $memo);
 303                         $Refs->save(ST_JOURNAL, $id, $ref);
 304                 }
 305         }
 306 }
 307
 308 //--------------------------------------------------------------------------------------
 309
 310 // $date_ - display / non-sql date
 311 // $std_cost - in HOME currency
 312 // $show_or_hide - wil this move be visible in reports, etc
 313 // $price - in $person_id's currency
 314
 315 function add_stock_move($type, $stock_id, $trans_no, $location,
 316     $date_, $reference, $quantity, $std_cost, $person_id=0, $show_or_hide=1,
 317     $price=0, $discount_percent=0, $error_msg="")
 318 {
 319         $date = date2sql($date_);
 320
 321         $sql = "INSERT INTO ".TB_PREF."stock_moves (stock_id, trans_no, type, loc_code,
 322                 tran_date, person_id, reference, qty, standard_cost, visible, price,
 323                 discount_percent) VALUES (".db_escape($stock_id)
 324                 .", ".db_escape($trans_no).", ".db_escape($type)
 325                 .",     ".db_escape($location).", '$date', "
 326                 .db_escape($person_id).", ".db_escape($reference).", "
 327                 .db_escape($quantity).", ".db_escape($std_cost).","
 328                 .db_escape($show_or_hide).", "
 329                 .db_escape($price).", ".db_escape($discount_percent).")";
 330
 331         if ($error_msg == "")
 332                 $error_msg = "The stock movement record cannot be inserted";
 333
 334         db_query($sql, $error_msg);
 335
 336         return db_insert_id();
 337 }
 338
 339 function update_stock_move($type, $trans_no, $stock_id, $cost)
 340 {
 341         $sql = "UPDATE ".TB_PREF."stock_moves SET standard_cost=".db_escape($cost)
 342                         ." WHERE type=".db_escape($type)
 343                         ."      AND trans_no=".db_escape($trans_no)
 344                         ."      AND stock_id=".db_escape($stock_id);
 345         db_query($sql, "The stock movement standard_cost cannot be updated");
 346 }
 347
 348 function update_stock_move_pid($type, $type_no, $stock_id, $pid, $cost)
 349 {
 350         $sql = "UPDATE ".TB_PREF."stock_moves SET standard_cost=".db_escape($cost)
 351                 ." WHERE type=".db_escape($type)
 352                 ."      AND trans_no=".db_escape($type_no)
 353                 ."      AND stock_id=".db_escape($stock_id)
 354                 ."  AND person_id = ".db_escape($pid);
 355         db_query($sql, "The stock movement standard_cost cannot be updated");
 356 }
 357
 358 //--------------------------------------------------------------------------------------------------
 359
 360 function get_stock_moves($type, $type_no, $visible=false)
 361 {
 362         $sql = "SELECT ".TB_PREF."stock_moves.*, ".TB_PREF."stock_master.description, "
 363                 .TB_PREF."stock_master.units,".TB_PREF."locations.location_name,"
 364                 .TB_PREF."stock_master.material_cost + "
 365                         .TB_PREF."stock_master.labour_cost + "
 366                         .TB_PREF."stock_master.overhead_cost AS FixedStandardCost
 367                 FROM ".TB_PREF."stock_moves,".TB_PREF."locations,".TB_PREF."stock_master
 368                 WHERE ".TB_PREF."stock_moves.stock_id = ".TB_PREF."stock_master.stock_id
 369                 AND ".TB_PREF."locations.loc_code=".TB_PREF."stock_moves.loc_code
 370                 AND type=".db_escape($type)." AND trans_no=".db_escape($type_no)." ORDER BY trans_id";
 371         if ($visible)
 372                 $sql .= " AND ".TB_PREF."stock_moves.visible=1";
 373
 374         return db_query($sql, "Could not get stock moves");
 375 }
 376
 377 //--------------------------------------------------------------------------------------------------
 378
 379 function void_stock_move($type, $type_no)
 380 {
 381
 382     $sql = "SELECT * from ".TB_PREF."stock_moves WHERE type=".db_escape($type)." AND trans_no=".db_escape($type_no);
 383     $result = db_query($sql, "Could not void stock moves");
 384     while ($row = db_fetch($result))
 385     {
 386                 //Skip cost averaging of service items
 387                 if (is_inventory_item($row["stock_id"]))
 388                 {
 389                         // The cost has to be adjusted.
 390                         // Transaction rates are stored either as price or standard_cost depending on types
 391                         $types = array(ST_SUPPCREDIT);
 392                         if (in_array($type,$types))
 393                                 $trans_rate = $row["price"];
 394                         else
 395                                 $trans_rate = $row["standard_cost"];
 396
 397                         update_average_material_cost(0, $row["stock_id"],
 398                                 $trans_rate, -$row["qty"], sql2date($row["tran_date"]));
 399                 }
 400
 401                 //Post stock move for service items also
 402         add_stock_move($type, $row["stock_id"], $type_no, $row["loc_code"],
 403                 sql2date($row["tran_date"]), $row["reference"], -$row["qty"]
 404                         , $row["standard_cost"], $row["person_id"], $row["visible"],
 405                 $row["price"], $row["discount_percent"]);
 406     }
 407 }
 408
 409 //--------------------------------------------------------------------------------------------------
 410
 411 function get_location_name($loc_code)
 412 {
 413         $sql = "SELECT location_name FROM ".TB_PREF."locations WHERE loc_code="
 414                 .db_escape($loc_code);
 415
 416         $result = db_query($sql, "could not retreive the location name for $loc_code");
 417
 418         if (db_num_rows($result) == 1)
 419         {
 420                 $row = db_fetch_row($result);
 421                 return $row[0];
 422         }
 423
 424         display_db_error("could not retreive the location name for $loc_code", $sql, true);
 425 }
 426
 427 //--------------------------------------------------------------------------------------------------
 428
 429
 430 ?>