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)
146 $sql = "SELECT ".TB_PREF."stock_moves.qty
147 FROM ".TB_PREF."stock_moves
148 WHERE ".TB_PREF."stock_moves.stock_id = ".db_escape($stock_id)."
149 AND ".TB_PREF."stock_moves.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 $sql = "SELECT SUM(qty) FROM ".TB_PREF."stock_moves
220 WHERE stock_id=".db_escape($stock_id)." AND
221 trans_id<'$from' GROUP BY stock_id";
222 $result = db_query($sql, "The deliveries could not be updated");
223 $qoh = db_fetch_row($result);
225 $qty = $row[0] - $qoh[0]; //QOH prior to -ve stock is subtracted
226 $final_cost = $row[1] - $qoh[0]*$cost[0];
228 return array($qty,$final_cost);
231 function get_purchases_from_trans($stock_id, $from)
233 // Calculate All inward stock moves i.e. qty > 0
234 $sql = "SELECT SUM(qty), SUM(qty*standard_cost) FROM ".TB_PREF."stock_moves
235 WHERE stock_id=".db_escape($stock_id)." AND qty > 0 AND
236 trans_id>'$from' GROUP BY stock_id";
237 $result = db_query($sql, "Could not get get_purchases_from_trans");
238 $row = db_fetch_row($result);
243 //-------------------------------------------------------------------
245 function adjust_deliveries($stock_id, $material_cost, $to)
249 if (!is_inventory_item($stock_id))
252 $from = last_negative_stock_trans_id($stock_id, $to);
253 if ($from == false || $from == -1)
256 $row = get_deliveries_from_trans($stock_id, $from);
260 $old_sales_cost = $row[1];
261 $new_sales_cost = $row[0] * $material_cost;
262 $sales_diff = $new_sales_cost - $old_sales_cost;
264 $row = get_purchases_from_trans($stock_id, $from);
266 $old_purchase_cost = $new_purchase_cost = 0;
269 $old_purchase_cost = $row[1];
270 $new_purchase_cost = $row[0] * $material_cost;
271 $purchase_diff = $new_purchase_cost - $old_purchase_cost;
274 $diff = $sales_diff - $purchase_diff;
278 $stock_gl_code = get_stock_gl_code($stock_id);
280 $dec = user_price_dec();
281 $old_cost = -round2($old_sales_cost-$old_purchase_cost,$dec);
282 $new_cost = -round2($new_sales_cost-$new_purchase_cost,$dec);
284 $cart = new items_cart(ST_COSTUPDATE);
285 $cart->tran_date = $cart->doc_date = $cart->event_date = $to;
286 if (!is_date_in_fiscalyear($cart->tran_date))
287 $cart->tran_date = end_fiscalyear();
288 $cart->reference = $Refs->get_next(ST_COSTUPDATE, null, $cart->tran_date, $to);
290 $cart->memo_ = _("Cost was ") . $old_cost. _(" changed to ") . $new_cost . _(" for item ")."'$stock_id'";
292 $cart->add_gl_item($stock_gl_code["cogs_account"], $stock_gl_code["dimension_id"], $stock_gl_code["dimension2_id"], $diff);
293 $cart->add_gl_item($stock_gl_code["inventory_account"], 0, 0, -$diff);
295 write_journal_entries($cart);
299 function get_stock_gl_code($stock_id)
301 /*Gets the GL Codes relevant to the item account */
302 $sql = "SELECT mb_flag, inventory_account, cogs_account,
303 adjustment_account, sales_account, assembly_account, dimension_id, dimension2_id FROM
304 ".TB_PREF."stock_master WHERE stock_id = ".db_escape($stock_id);
306 $get = db_query($sql,"retreive stock gl code");
307 return db_fetch($get);
310 //-----------------------------------------------------------------------------------------
312 function handle_negative_inventory($stock_id, $quantity, $standard_cost, $date_)
314 //If negative adjustment result in negative or zero inventory
315 //then difference should be adjusted
316 $qoh = get_qoh_on_date($stock_id);
318 if ($qoh + $quantity <= 0 && $qoh > 0) //Positive inventory turning zero/negative
322 $id = get_next_trans_no(ST_JOURNAL);
323 $ref = $Refs->get_next(ST_JOURNAL);
324 $diff = round($qoh*get_standard_cost($stock_id) + $quantity*$standard_cost, user_price_dec());
329 add_journal(ST_JOURNAL, $id, $diff, $date_, get_company_currency(), $ref);
330 $Refs->save(ST_JOURNAL, $id, $ref);
332 $stock_gl_code = get_stock_gl_code($stock_id);
333 $memo = _("Zero/negative inventory handling");
334 //Reverse the inventory effect if $qoh <=0
335 add_gl_trans_std_cost(ST_JOURNAL, $id, $date_,
336 $stock_gl_code["inventory_account"],
337 $stock_gl_code['dimension_id'], $stock_gl_code['dimension2_id'], $memo,
339 //GL Posting to inventory adjustment account
340 add_gl_trans_std_cost(ST_JOURNAL, $id, $date_,
341 $stock_gl_code["adjustment_account"],
342 $stock_gl_code['dimension_id'], $stock_gl_code['dimension2_id'], $memo,
345 add_audit_trail(ST_JOURNAL, $id, $date_);
346 add_comments(ST_JOURNAL, $id, $date_, $memo);
347 $Refs->save(ST_JOURNAL, $id, $ref);
348 commit_transaction();
353 //--------------------------------------------------------------------------------------
355 // $date_ - display / non-sql date
356 // $std_cost - in HOME currency
357 // $price - in $person_id's currency
359 function add_stock_move($type, $stock_id, $trans_no, $location,
360 $date_, $reference, $quantity, $std_cost, $person_id=0, $price=0)
362 $date = date2sql($date_);
364 $sql = "INSERT INTO ".TB_PREF."stock_moves (stock_id, trans_no, type, loc_code,
365 tran_date, person_id, reference, qty, standard_cost, price) VALUES ("
366 .db_escape($stock_id).", ".db_escape($trans_no).", "
367 .db_escape($type).", ".db_escape($location).", '$date', "
368 .db_escape($person_id).", ".db_escape($reference).", "
369 .db_escape($quantity).", ".db_escape($std_cost)."," .db_escape($price).")";
371 db_query($sql, "The stock movement record cannot be inserted");
373 return db_insert_id();
376 function update_stock_move($type, $trans_no, $stock_id, $cost)
378 $sql = "UPDATE ".TB_PREF."stock_moves SET standard_cost=".db_escape($cost)
379 ." WHERE type=".db_escape($type)
380 ." AND trans_no=".db_escape($trans_no)
381 ." AND stock_id=".db_escape($stock_id);
382 db_query($sql, "The stock movement standard_cost cannot be updated");
385 //--------------------------------------------------------------------------------------------------
387 function get_stock_moves($type, $type_no)
389 $sql = "SELECT ".TB_PREF."stock_moves.*, ".TB_PREF."stock_master.description, "
390 .TB_PREF."stock_master.units,".TB_PREF."locations.location_name,"
391 .TB_PREF."stock_master.material_cost + "
392 .TB_PREF."stock_master.labour_cost + "
393 .TB_PREF."stock_master.overhead_cost AS FixedStandardCost
394 FROM ".TB_PREF."stock_moves,".TB_PREF."locations,".TB_PREF."stock_master
395 WHERE ".TB_PREF."stock_moves.stock_id = ".TB_PREF."stock_master.stock_id
396 AND ".TB_PREF."locations.loc_code=".TB_PREF."stock_moves.loc_code
397 AND type=".db_escape($type)." AND trans_no=".db_escape($type_no)." ORDER BY trans_id";
399 return db_query($sql, "Could not get stock moves");
402 //--------------------------------------------------------------------------------------------------
404 function void_stock_move($type, $type_no)
406 $sql = "SELECT * from ".TB_PREF."stock_moves WHERE type=".db_escape($type)." AND trans_no=".db_escape($type_no);
408 $result = db_query($sql, "Could not void stock moves");
409 while ($row = db_fetch($result))
411 //Skip cost averaging of service items
412 if (is_inventory_item($row["stock_id"]))
414 // The cost has to be adjusted.
415 // Transaction rates are stored either as price or standard_cost depending on types
416 $types = array(ST_SUPPCREDIT, ST_SUPPRECEIVE);
417 if (in_array($type, $types))
418 $unit_cost = $row["price"];
420 $unit_cost = $row["standard_cost"];
422 update_average_material_cost($row["person_id"], $row["stock_id"],
423 $unit_cost, -$row["qty"], sql2date($row["tran_date"]));
426 $sql = "DELETE FROM ".TB_PREF."stock_moves WHERE type=".db_escape($type)
427 ." AND trans_no=".db_escape($type_no);
428 db_query($sql, "The stock movement cannot be delated");
431 //--------------------------------------------------------------------------------------------------
433 function get_location_name($loc_code)
435 $sql = "SELECT location_name FROM ".TB_PREF."locations WHERE loc_code="
436 .db_escape($loc_code);
438 $result = db_query($sql, "could not retreive the location name for $loc_code");
440 if (db_num_rows($result) == 1)
442 $row = db_fetch_row($result);
446 display_db_error("could not retreive the location name for $loc_code", $sql, true);
449 function get_mb_flag($stock_id)
451 $sql = "SELECT mb_flag FROM ".TB_PREF."stock_master WHERE stock_id = "
452 .db_escape($stock_id);
453 $result = db_query($sql, "retreive mb_flag from item");
455 if (db_num_rows($result) == 0)
458 $myrow = db_fetch_row($result);