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)
17 $date = date2sql($date_);
18 $sql = "SELECT SUM(qty)
19 FROM ".TB_PREF."stock_moves st
20 LEFT JOIN ".TB_PREF."voided v ON st.type=v.type AND st.trans_no=v.id
22 AND stock_id=".db_escape($stock_id)."
23 AND tran_date <= '$date'";
25 if ($location != null)
26 $sql .= " AND loc_code = ".db_escape($location);
28 $result = db_query($sql, "QOH calculation failed");
30 $myrow = db_fetch_row($result);
33 return $qoh ? $qoh : 0;
37 * Check whether change in stock on date would not cause negative qoh in stock history.
38 * Returns null on success or max. available quantity with respective date otherwise.
39 * Running balance is checked on daily basis only, as we do not control time of transaction.
41 * $delta_qty - tested change in stock qty at $date.
42 * $date - check date; when set to null checks all the stock history.
45 function check_negative_stock($stock_id, $delta_qty, $location=null, $date=null)
49 return null; // qty increese is always safe
54 $date = date2sql($date);
56 // check stock status on date
57 $sql = "SELECT SUM(qty) qty, '$date' tran_date FROM ".TB_PREF."stock_moves
58 WHERE stock_id=".db_escape($stock_id)."
59 AND tran_date <= '$date'";
62 $sql .= " AND loc_code = ".db_escape($location);
64 $result = db_query($sql, "QOH calculation failed");
65 $qos = db_fetch_assoc($result);
67 // check also all stock changes after the date to avoid negative stock in future
68 $sql = TB_PREF."stock_moves WHERE stock_id=".db_escape($stock_id) . " AND tran_date > '$date'";
71 $sql .= " AND loc_code=".db_escape($location);
73 $rt = running_total_sql($sql, 'qty', 'tran_date');
75 $sql = "SELECT {$qos['qty']}+total qty, tran_date FROM ($rt) stock_status ORDER by total, tran_date";
76 $history = db_query($sql, 'cannot check stock history');
77 $min_qos = db_fetch($history);
79 if ($min_qos && ($min_qos['qty'] < $qos['qty']))
82 return -$delta_qty > $qos['qty'] ? $qos : null;
85 //--------------------------------------------------------------------------------------
87 function get_item_edit_info($stock_id)
89 $sql = "SELECT material_cost + labour_cost + overhead_cost AS standard_cost, units, decimals
90 FROM ".TB_PREF."stock_master,".TB_PREF."item_units
91 WHERE stock_id=".db_escape($stock_id)
92 ." AND ".TB_PREF."stock_master.units=".TB_PREF."item_units.abbr";
93 $result = db_query($sql, "The standard cost cannot be retrieved");
95 return db_fetch($result);
98 //--------------------------------------------------------------------------------------
100 function get_standard_cost($stock_id)
102 $sql = "SELECT (material_cost + labour_cost + overhead_cost) AS std_cost
103 FROM ".TB_PREF."stock_master s WHERE stock_id=".db_escape($stock_id);
104 $result = db_query($sql, "The standard cost cannot be retrieved");
106 $myrow = db_fetch_row($result);
111 //--------------------------------------------------------------------------------------
113 function is_inventory_item($stock_id)
115 $sql = "SELECT stock_id FROM ".TB_PREF."stock_master
116 WHERE stock_id=".db_escape($stock_id)." AND mb_flag <> 'D'";
117 $result = db_query($sql, "Cannot query is inventory item or not");
119 return db_num_rows($result) > 0;
122 //-------------------------------------------------------------------
124 function last_negative_stock_begin_date($stock_id, $to)
129 $sql = "SET @flag = 0";
131 $sql = "SELECT SUM(qty), @q:= @q + qty, IF(@q < 0 AND @flag=0, @flag:=1,@flag:=0), IF(@q < 0 AND @flag=1, tran_date,'') AS begin_date
132 FROM ".TB_PREF."stock_moves
133 WHERE stock_id=".db_escape($stock_id)." AND tran_date<='$to'
135 GROUP BY stock_id ORDER BY tran_date";
137 $result = db_query($sql, "The dstock moves could not be retrieved");
138 $row = db_fetch_row($result);
142 //-------------------------------------------------------------------
144 function get_already_delivered($stock_id, $location, $trans_no)
147 FROM ".TB_PREF."stock_moves
148 WHERE stock_id = ".db_escape($stock_id)."
149 AND loc_code = ".db_escape($location)."
150 AND type=".ST_CUSTDELIVERY." AND trans_no=".db_escape($trans_no);
151 $result = db_query($sql, "Could not get stock moves");
152 $row = db_fetch_row($result);
156 function last_negative_stock_trans_id($stock_id, $to)
158 $sql = "SELECT * from ".TB_PREF."stock_moves
159 WHERE stock_id=".db_escape($stock_id)."
160 AND qty <> 0 order by trans_id asc";
162 $result = db_query($sql, "The query on stock moves failed.");
166 $negative_trans_id = -1;
168 while ($myrow = db_fetch($result))
170 $qty += $myrow['qty'];
171 if ($qty < 0 && $flag == 0)
174 $negative_trans_id = $myrow['trans_id'];
181 return $negative_trans_id;
186 //-------------------------------------------------------------------
188 function get_deliveries_between($stock_id, $from, $to)
190 $from = date2sql($from);
192 $sql = "SELECT SUM(-qty), SUM(-qty*standard_cost) FROM ".TB_PREF."stock_moves
193 WHERE type=".ST_CUSTDELIVERY." AND stock_id=".db_escape($stock_id)." AND
194 tran_date>='$from' AND tran_date<='$to' GROUP BY stock_id";
196 $result = db_query($sql, "The deliveries could not be updated");
197 return db_fetch_row($result);
200 function get_deliveries_from_trans($stock_id, $from)
202 // -ve qty is delivery either by ST_CUSTDELIVERY or inventory adjustment
203 //Price for GRN and SUPPCREDIT and std_cost for other trans_types
204 $sql = "SELECT SUM(-qty), SUM(-qty*IF(type=".ST_SUPPRECEIVE." OR type=".ST_SUPPCREDIT.", price, standard_cost))
205 FROM ".TB_PREF."stock_moves
206 WHERE stock_id=".db_escape($stock_id)." AND qty < 0 AND
207 trans_id>='$from' GROUP BY stock_id";
208 $result = db_query($sql, "The deliveries could not be updated");
209 $row = db_fetch_row($result);
211 $sql = "SELECT IF(type=".ST_SUPPRECEIVE." OR type=".ST_SUPPCREDIT.", price, standard_cost)
212 FROM ".TB_PREF."stock_moves
213 WHERE stock_id=".db_escape($stock_id)
214 ." AND trans_id ='$from'";
215 $result = db_query($sql, "The deliveries could not be updated");
216 $cost = db_fetch_row($result);
218 // Adjusting QOH valuation
219 $sql = "SELECT SUM(qty)
220 FROM ".TB_PREF."stock_moves
221 WHERE stock_id=".db_escape($stock_id)." AND
222 trans_id<'$from' GROUP BY stock_id";
223 $result = db_query($sql, "The deliveries could not be updated");
224 $qoh = db_fetch_row($result);
226 $qty = $row[0] - $qoh[0]; //QOH prior to -ve stock is subtracted
227 $final_cost = $row[1] - $qoh[0]*$cost[0];
229 return array($qty,$final_cost);
232 function get_purchases_from_trans($stock_id, $from)
234 // Calculate All inward stock moves i.e. qty > 0
235 $sql = "SELECT SUM(qty), SUM(qty*standard_cost)
236 FROM ".TB_PREF."stock_moves
237 WHERE stock_id=".db_escape($stock_id)." AND qty > 0 AND
238 trans_id>'$from' GROUP BY stock_id";
239 $result = db_query($sql, "Could not get get_purchases_from_trans");
240 $row = db_fetch_row($result);
245 //-------------------------------------------------------------------
247 function adjust_deliveries($stock_id, $material_cost, $to)
251 if (!is_inventory_item($stock_id))
254 $from = last_negative_stock_trans_id($stock_id, $to);
255 if ($from == false || $from == -1)
258 $row = get_deliveries_from_trans($stock_id, $from);
262 $old_sales_cost = $row[1];
263 $new_sales_cost = $row[0] * $material_cost;
264 $sales_diff = $new_sales_cost - $old_sales_cost;
266 $row = get_purchases_from_trans($stock_id, $from);
268 $old_purchase_cost = $new_purchase_cost = 0;
271 $old_purchase_cost = $row[1];
272 $new_purchase_cost = $row[0] * $material_cost;
273 $purchase_diff = $new_purchase_cost - $old_purchase_cost;
276 $diff = $sales_diff - $purchase_diff;
280 $stock_gl_code = get_stock_gl_code($stock_id);
282 $dec = user_price_dec();
283 $old_cost = -round2($old_sales_cost-$old_purchase_cost,$dec);
284 $new_cost = -round2($new_sales_cost-$new_purchase_cost,$dec);
286 $cart = new items_cart(ST_COSTUPDATE);
287 $cart->tran_date = $cart->doc_date = $cart->event_date = $to;
288 if (!is_date_in_fiscalyear($cart->tran_date))
289 $cart->tran_date = end_fiscalyear();
290 $cart->reference = $Refs->get_next(ST_COSTUPDATE, null, $cart->tran_date, $to);
292 $cart->memo_ = _("Cost was ") . $old_cost. _(" changed to ") . $new_cost . _(" for item ")."'$stock_id'";
294 $cart->add_gl_item($stock_gl_code["cogs_account"], $stock_gl_code["dimension_id"], $stock_gl_code["dimension2_id"], $diff);
295 $cart->add_gl_item($stock_gl_code["inventory_account"], 0, 0, -$diff);
297 write_journal_entries($cart);
301 function get_stock_gl_code($stock_id)
303 /*Gets the GL Codes relevant to the item account */
304 $sql = "SELECT mb_flag, inventory_account, cogs_account,
305 adjustment_account, sales_account, assembly_account, dimension_id, dimension2_id FROM
306 ".TB_PREF."stock_master WHERE stock_id = ".db_escape($stock_id);
308 $get = db_query($sql,"retreive stock gl code");
309 return db_fetch($get);
312 //-----------------------------------------------------------------------------------------
314 function handle_negative_inventory($stock_id, $quantity, $standard_cost, $date_)
316 //If negative adjustment result in negative or zero inventory
317 //then difference should be adjusted
318 $qoh = get_qoh_on_date($stock_id);
320 if ($qoh + $quantity <= 0 && $qoh > 0) //Positive inventory turning zero/negative
324 $id = get_next_trans_no(ST_JOURNAL);
325 $ref = $Refs->get_next(ST_JOURNAL, null, $date_);
326 $diff = round($qoh*get_standard_cost($stock_id) + $quantity*$standard_cost, user_price_dec());
331 add_journal(ST_JOURNAL, $id, $diff, $date_, get_company_currency(), $ref);
332 $Refs->save(ST_JOURNAL, $id, $ref);
334 $stock_gl_code = get_stock_gl_code($stock_id);
335 $memo = _("Zero/negative inventory handling");
336 //Reverse the inventory effect if $qoh <=0
337 add_gl_trans_std_cost(ST_JOURNAL, $id, $date_,
338 $stock_gl_code["inventory_account"],
339 $stock_gl_code['dimension_id'], $stock_gl_code['dimension2_id'], $memo,
341 //GL Posting to inventory adjustment account
342 add_gl_trans_std_cost(ST_JOURNAL, $id, $date_,
343 $stock_gl_code["adjustment_account"],
344 $stock_gl_code['dimension_id'], $stock_gl_code['dimension2_id'], $memo,
347 add_audit_trail(ST_JOURNAL, $id, $date_);
348 add_comments(ST_JOURNAL, $id, $date_, $memo);
349 $Refs->save(ST_JOURNAL, $id, $ref);
350 commit_transaction();
355 //--------------------------------------------------------------------------------------
357 // $date_ - display / non-sql date
358 // $std_cost - in HOME currency
359 // $price - in transaction currency
361 function add_stock_move($type, $stock_id, $trans_no, $location,
362 $date_, $reference, $quantity, $std_cost, $price=0)
364 $date = date2sql($date_);
366 $sql = "INSERT INTO ".TB_PREF."stock_moves (stock_id, trans_no, type, loc_code,
367 tran_date, reference, qty, standard_cost, price) VALUES ("
368 .db_escape($stock_id).", ".db_escape($trans_no).", "
369 .db_escape($type).", ".db_escape($location).", '$date', "
370 .db_escape($reference).", "
371 .db_escape($quantity).", ".db_escape($std_cost)."," .db_escape($price).")";
373 db_query($sql, "The stock movement record cannot be inserted");
375 return db_insert_id();
378 function update_stock_move($type, $trans_no, $stock_id, $cost)
380 $sql = "UPDATE ".TB_PREF."stock_moves SET standard_cost=".db_escape($cost)
381 ." WHERE type=".db_escape($type)
382 ." AND trans_no=".db_escape($trans_no)
383 ." AND stock_id=".db_escape($stock_id);
384 db_query($sql, "The stock movement standard_cost cannot be updated");
387 //--------------------------------------------------------------------------------------------------
389 function get_stock_moves($type, $type_no)
391 $sql = "SELECT move.*, item.description, item.mb_flag, item.units, stock.location_name,
392 item.material_cost + item.labour_cost + item.overhead_cost AS FixedStandardCost
393 FROM ".TB_PREF."stock_moves move,"
394 .TB_PREF."locations stock,"
395 .TB_PREF."stock_master item
396 WHERE move.stock_id = item.stock_id
397 AND stock.loc_code=move.loc_code
398 AND type=".db_escape($type)
399 ." AND trans_no=".db_escape($type_no)
400 ." ORDER BY trans_id";
402 return db_query($sql, "Could not get stock moves");
405 //--------------------------------------------------------------------------------------------------
407 function void_stock_move($type, $type_no)
409 $sql = "SELECT move.*, supplier.supplier_id
410 FROM ".TB_PREF."stock_moves move
411 LEFT JOIN ".TB_PREF."supp_trans credit ON credit.trans_no=move.trans_no AND credit.type=move.type
412 LEFT JOIN ".TB_PREF."grn_batch grn ON grn.id=move.trans_no AND 25=move.type
413 LEFT JOIN ".TB_PREF."suppliers supplier ON IFNULL(grn.supplier_id, credit.supplier_id)=supplier.supplier_id
414 WHERE move.type=".db_escape($type)." AND move.trans_no=".db_escape($type_no);
416 $result = db_query($sql, "Could not void stock moves");
417 while ($row = db_fetch($result))
419 //Skip cost averaging of service items
420 if (is_inventory_item($row["stock_id"]))
422 // The cost has to be adjusted.
423 // Transaction rates are stored either as price or standard_cost depending on types
424 $types = array(ST_SUPPCREDIT, ST_SUPPRECEIVE);
425 if (in_array($type, $types))
426 $unit_cost = $row["price"];
428 $unit_cost = $row["standard_cost"];
430 update_average_material_cost($row["supplier_id"], $row["stock_id"],
431 $unit_cost, -$row["qty"], sql2date($row["tran_date"]));
434 $sql = "DELETE FROM ".TB_PREF."stock_moves
435 WHERE type=".db_escape($type)
436 ." AND trans_no=".db_escape($type_no);
437 db_query($sql, "The stock movement cannot be delated");
440 //--------------------------------------------------------------------------------------------------
442 function get_location_name($loc_code)
444 $sql = "SELECT location_name FROM ".TB_PREF."locations
445 WHERE loc_code=".db_escape($loc_code);
447 $result = db_query($sql, "could not retreive the location name for $loc_code");
449 if (db_num_rows($result) == 1)
451 $row = db_fetch_row($result);
455 display_db_error("could not retreive the location name for $loc_code", $sql, true);
458 function get_mb_flag($stock_id)
460 $sql = "SELECT mb_flag FROM ".TB_PREF."stock_master
461 WHERE stock_id = ".db_escape($stock_id);
462 $result = db_query($sql, "retreive mb_flag from item");
464 if (db_num_rows($result) == 0)
467 $myrow = db_fetch_row($result);