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     //Price for GRN and SUPPCREDIT and std_cost for other trans_types
 170     $sql = "SELECT SUM(-qty), SUM(-qty*IF(type=".ST_SUPPRECEIVE." OR type=".ST_SUPPCREDIT.", price, standard_cost))
 171         FROM ".TB_PREF."stock_moves
 172         WHERE stock_id=".db_escape($stock_id)." AND qty < 0 AND
 173             trans_id>='$from' GROUP BY stock_id";
 174         $result = db_query($sql, "The deliveries could not be updated");
 175         $row = db_fetch_row($result);
 176
 177     $sql = "SELECT IF(type=".ST_SUPPRECEIVE." OR type=".ST_SUPPCREDIT.", price, standard_cost)
 178         FROM ".TB_PREF."stock_moves
 179         WHERE stock_id=".db_escape($stock_id)
 180             ." AND trans_id ='$from'";
 181     $result = db_query($sql, "The deliveries could not be updated");
 182     $cost = db_fetch_row($result);
 183
 184         // Adjusting QOH valuation
 185         $sql = "SELECT SUM(qty) FROM ".TB_PREF."stock_moves
 186                 WHERE stock_id=".db_escape($stock_id)." AND
 187                         trans_id<'$from' GROUP BY stock_id";
 188         $result = db_query($sql, "The deliveries could not be updated");
 189         $qoh = db_fetch_row($result);
 190
 191         $qty = $row[0] - $qoh[0]; //QOH prior to -ve stock is subtracted
 192         $final_cost = $row[1] - $qoh[0]*$cost[0];
 193
 194         return array($qty,$final_cost);
 195 }
 196
 197 function get_purchases_from_trans($stock_id, $from)
 198 {
 199         // Calculate All inward stock moves i.e. qty > 0
 200         $sql = "SELECT SUM(qty), SUM(qty*standard_cost) FROM ".TB_PREF."stock_moves
 201                 WHERE stock_id=".db_escape($stock_id)." AND qty > 0 AND
 202                         trans_id>'$from' GROUP BY stock_id";
 203         $result = db_query($sql, "Could not get get_purchases_from_trans");
 204         $row = db_fetch_row($result);
 205
 206         return $row;
 207 }
 208
 209 //-------------------------------------------------------------------
 210
 211 function adjust_deliveries($stock_id, $material_cost, $to)
 212 {
 213         if (!is_inventory_item($stock_id))
 214                 return;
 215
 216         $from = last_negative_stock_trans_id($stock_id, $to);
 217         if ($from == false || $from == -1)
 218                 return;
 219
 220         $row = get_deliveries_from_trans($stock_id, $from);
 221
 222         if ($row == false)
 223                 return;
 224         $old_sales_cost = $row[1];
 225         $new_sales_cost = $row[0] * $material_cost;
 226         $sales_diff = $new_sales_cost - $old_sales_cost;
 227
 228         $row = get_purchases_from_trans($stock_id, $from);
 229         $purchase_diff = 0;
 230         $old_purchase_cost = 0;
 231         if ($row != false)
 232         {
 233                 $old_purchase_cost = $row[1];
 234                 $new_purchase_cost = $row[0] * $material_cost;
 235                 $purchase_diff = $new_purchase_cost - $old_purchase_cost;
 236         }
 237
 238         $diff =  $sales_diff - $purchase_diff;
 239
 240         if ($diff != 0)
 241         {
 242                 $update_no = get_next_trans_no(ST_COSTUPDATE);
 243                 if (!is_date_in_fiscalyear($to))
 244                         $to = end_fiscalyear();
 245
 246                 $stock_gl_code = get_stock_gl_code($stock_id);
 247
 248                 $dec = user_price_dec();
 249                 $old_cost = -round2($old_sales_cost-$old_purchase_cost,$dec);
 250                 $new_cost = -round2($new_sales_cost-$new_purchase_cost,$dec);
 251
 252                 $memo_ = _("Cost was ") . $old_cost. _(" changed to ") . $new_cost . _(" for item ")."'$stock_id'";
 253                 add_gl_trans_std_cost(ST_COSTUPDATE, $update_no, $to, $stock_gl_code["cogs_account"],
 254                         $stock_gl_code["dimension_id"], $stock_gl_code["dimension2_id"], $memo_, $diff);
 255
 256                 add_gl_trans_std_cost(ST_COSTUPDATE, $update_no, $to, $stock_gl_code["inventory_account"], 0, 0, $memo_,
 257                         -$diff);
 258                 add_audit_trail(ST_COSTUPDATE, $update_no, $to);
 259         }
 260 }
 261
 262 function get_stock_gl_code($stock_id)
 263 {
 264         /*Gets the GL Codes relevant to the item account  */
 265         $sql = "SELECT mb_flag, inventory_account, cogs_account,
 266                 adjustment_account, sales_account, assembly_account, dimension_id, dimension2_id FROM
 267                 ".TB_PREF."stock_master WHERE stock_id = ".db_escape($stock_id);
 268
 269         $get = db_query($sql,"retreive stock gl code");
 270         return db_fetch($get);
 271 }
 272
 273 //-----------------------------------------------------------------------------------------
 274
 275 function handle_negative_inventory($stock_id, $quantity, $standard_cost, $date_)
 276 {
 277         //If negative adjustment result in negative or zero inventory
 278         //then difference should be adjusted
 279         $qoh = get_qoh_on_date($stock_id);
 280
 281         if ($qoh + $quantity <= 0 && $qoh > 0) //Positive inventory turning zero/negative
 282         {
 283                 global $Refs;
 284
 285                 $id = get_next_trans_no(ST_JOURNAL);
 286                 $ref = $Refs->get_next(ST_JOURNAL);
 287                 $diff = get_standard_cost($stock_id) - $standard_cost;
 288
 289                 if ($diff !=0)
 290                 {
 291                         $stock_gl_code = get_stock_gl_code($stock_id);
 292                         $memo = _("Zero/negative inventory handling");
 293                         //Reverse the inventory effect if $qoh <=0
 294                         add_gl_trans_std_cost(ST_JOURNAL, $id, $date_,
 295                                 $stock_gl_code["inventory_account"],
 296                                 $stock_gl_code['dimension_id'], $stock_gl_code['dimension2_id'], $memo,
 297                                 -$qoh * $diff);
 298                         //GL Posting to inventory adjustment account
 299                         add_gl_trans_std_cost(ST_JOURNAL, $id, $date_,
 300                                 $stock_gl_code["adjustment_account"],
 301                                 $stock_gl_code['dimension_id'], $stock_gl_code['dimension2_id'], $memo,
 302                                 $qoh * $diff);
 303
 304                         add_audit_trail(ST_JOURNAL, $id, $date_);
 305                         add_comments(ST_JOURNAL, $id, $date_, $memo);
 306                         $Refs->save(ST_JOURNAL, $id, $ref);
 307                 }
 308         }
 309 }
 310
 311 //--------------------------------------------------------------------------------------
 312
 313 // $date_ - display / non-sql date
 314 // $std_cost - in HOME currency
 315 // $show_or_hide - wil this move be visible in reports, etc
 316 // $price - in $person_id's currency
 317
 318 function add_stock_move($type, $stock_id, $trans_no, $location,
 319     $date_, $reference, $quantity, $std_cost, $person_id=0, $show_or_hide=1,
 320     $price=0, $discount_percent=0, $error_msg="")
 321 {
 322         $date = date2sql($date_);
 323
 324         $sql = "INSERT INTO ".TB_PREF."stock_moves (stock_id, trans_no, type, loc_code,
 325                 tran_date, person_id, reference, qty, standard_cost, visible, price,
 326                 discount_percent) VALUES (".db_escape($stock_id)
 327                 .", ".db_escape($trans_no).", ".db_escape($type)
 328                 .",     ".db_escape($location).", '$date', "
 329                 .db_escape($person_id).", ".db_escape($reference).", "
 330                 .db_escape($quantity).", ".db_escape($std_cost).","
 331                 .db_escape($show_or_hide).", "
 332                 .db_escape($price).", ".db_escape($discount_percent).")";
 333
 334         if ($error_msg == "")
 335                 $error_msg = "The stock movement record cannot be inserted";
 336
 337         db_query($sql, $error_msg);
 338
 339         return db_insert_id();
 340 }
 341
 342 function update_stock_move($type, $trans_no, $stock_id, $cost)
 343 {
 344         $sql = "UPDATE ".TB_PREF."stock_moves SET standard_cost=".db_escape($cost)
 345                         ." WHERE type=".db_escape($type)
 346                         ."      AND trans_no=".db_escape($trans_no)
 347                         ."      AND stock_id=".db_escape($stock_id);
 348         db_query($sql, "The stock movement standard_cost cannot be updated");
 349 }
 350
 351 function update_stock_move_pid($type, $type_no, $stock_id, $pid, $cost)
 352 {
 353         $sql = "UPDATE ".TB_PREF."stock_moves SET standard_cost=".db_escape($cost)
 354                 ." WHERE type=".db_escape($type)
 355                 ."      AND trans_no=".db_escape($type_no)
 356                 ."      AND stock_id=".db_escape($stock_id)
 357                 ."  AND person_id = ".db_escape($pid);
 358         db_query($sql, "The stock movement standard_cost cannot be updated");
 359 }
 360
 361 //--------------------------------------------------------------------------------------------------
 362
 363 function get_stock_moves($type, $type_no, $visible=false)
 364 {
 365         $sql = "SELECT ".TB_PREF."stock_moves.*, ".TB_PREF."stock_master.description, "
 366                 .TB_PREF."stock_master.units,".TB_PREF."locations.location_name,"
 367                 .TB_PREF."stock_master.material_cost + "
 368                         .TB_PREF."stock_master.labour_cost + "
 369                         .TB_PREF."stock_master.overhead_cost AS FixedStandardCost
 370                 FROM ".TB_PREF."stock_moves,".TB_PREF."locations,".TB_PREF."stock_master
 371                 WHERE ".TB_PREF."stock_moves.stock_id = ".TB_PREF."stock_master.stock_id
 372                 AND ".TB_PREF."locations.loc_code=".TB_PREF."stock_moves.loc_code
 373                 AND type=".db_escape($type)." AND trans_no=".db_escape($type_no)." ORDER BY trans_id";
 374         if ($visible)
 375                 $sql .= " AND ".TB_PREF."stock_moves.visible=1";
 376
 377         return db_query($sql, "Could not get stock moves");
 378 }
 379
 380 //--------------------------------------------------------------------------------------------------
 381
 382 function void_stock_move($type, $type_no)
 383 {
 384     $sql = "SELECT stock_id, standard_cost, loc_code, tran_date, reference, person_id, visible, discount_percent, price,
 385         sum(qty) qty FROM ".TB_PREF."stock_moves WHERE type=".db_escape($type)." AND trans_no=".db_escape($type_no)."
 386         GROUP BY stock_id, standard_cost, loc_code, tran_date, reference, person_id, visible, discount_percent, price HAVING sum(qty) <> 0";
 387
 388     $result = db_query($sql, "Could not void stock moves");
 389     while ($row = db_fetch($result))
 390     {
 391                 //Skip cost averaging of service items
 392                 if (is_inventory_item($row["stock_id"]))
 393                 {
 394                         // The cost has to be adjusted.
 395                         // Transaction rates are stored either as price or standard_cost depending on types
 396                         $types = array(ST_SUPPCREDIT, ST_SUPPRECEIVE);
 397                         if (in_array($type,$types))
 398                                 $trans_rate = $row["price"];
 399                         else
 400                                 $trans_rate = $row["standard_cost"];
 401
 402                         update_average_material_cost(0, $row["stock_id"],
 403                                 $trans_rate, -$row["qty"], sql2date($row["tran_date"]));
 404                 }
 405
 406                 //Post stock move for service items also
 407         add_stock_move($type, $row["stock_id"], $type_no, $row["loc_code"],
 408                 sql2date($row["tran_date"]), $row["reference"], -$row["qty"]
 409                         , $row["standard_cost"], $row["person_id"], $row["visible"],
 410                 $row["price"], $row["discount_percent"]);
 411     }
 412 }
 413
 414 //--------------------------------------------------------------------------------------------------
 415
 416 function get_location_name($loc_code)
 417 {
 418         $sql = "SELECT location_name FROM ".TB_PREF."locations WHERE loc_code="
 419                 .db_escape($loc_code);
 420
 421         $result = db_query($sql, "could not retreive the location name for $loc_code");
 422
 423         if (db_num_rows($result) == 1)
 424         {
 425                 $row = db_fetch_row($result);
 426                 return $row[0];
 427         }
 428
 429         display_db_error("could not retreive the location name for $loc_code", $sql, true);
 430 }