83 lines
3.0 KiB
PHP
83 lines
3.0 KiB
PHP
<?php
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session_start();
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require '../../../assets/utils/db_auth.php';
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$id = 0;
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$warehouse_id = (int)$data['warehouse'];
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$whMgmt = new WarehouseManager($pdo2, $company_id);
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$warehouse = $whMgmt->getStockContext($warehouse_id, $id);
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$table = $warehouse['table'];
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// ── Always last 12 months ────────────────────────────────────────────
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$now = new DateTime();
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$start = (clone $now)->modify('-12 months')->format('Y-m-d 00:00:00');
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$end = $now->format('Y-m-d 23:59:59');
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// ── Get cumulative balance BEFORE the 12-month window ────────────────
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$sql_prior = "SELECT
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ROUND(COALESCE(SUM(a.`in`), 0) - COALESCE(SUM(a.`out`), 0), 2) AS `balance`
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FROM `{$table}` a
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WHERE
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a.company_id = {$company_id} and
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a.date < '{$start}'";
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$sth = $pdo2->prepare($sql_prior);
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$sth->execute();
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$prior_balance = (float)$sth->fetchColumn();
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// ── Get monthly in/out for the 12-month window ──────────────────────
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$sql = "SELECT
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DATE_FORMAT(a.date, '%Y-%m') AS `sort_key`,
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ROUND(SUM(a.`in`), 2) AS `stock_in`,
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ROUND(SUM(a.`out`), 2) AS `stock_out`
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FROM `{$table}` a
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WHERE
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a.company_id = {$company_id} and
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a.date >= '{$start}' and
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a.date <= '{$end}'
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GROUP BY `sort_key`
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ORDER BY `sort_key` ASC";
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$sth = $pdo2->prepare($sql);
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$sth->execute();
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$rows = $sth->fetchAll(PDO::FETCH_ASSOC);
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// ── Index DB results by sort_key (YYYY-MM) ──────────────────────────
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$dataByMonth = [];
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foreach ($rows as $row) {
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$dataByMonth[$row['sort_key']] = $row;
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}
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// ── Always build 12 months, accumulate running balance ──────────────
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$labels = [];
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$balance = [];
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$running = $prior_balance;
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for ($i = 11; $i >= 0; $i--) {
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$dt = (clone $now)->modify("-{$i} months");
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$key = $dt->format('Y-m');
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$label = $dt->format('M');
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$month_in = isset($dataByMonth[$key]) ? (float)$dataByMonth[$key]['stock_in'] : 0;
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$month_out = isset($dataByMonth[$key]) ? (float)$dataByMonth[$key]['stock_out'] : 0;
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$running += ($month_in - $month_out);
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$labels[] = $label;
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$balance[] = round($running, 2);
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}
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// ── Response ─────────────────────────────────────────────────────────
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$output = [
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'labels' => $labels,
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'balance' => $balance,
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];
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$answer["output"] = $output;
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$answer["success"] = 1;
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exit(json_encode($answer));
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?>
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