chore: upload parte 1 - logica

app/api/stock/route.ts

@@ -0,0 +1,146 @@
+import { NextRequest, NextResponse } from "next/server";
+import { getDb } from "@/lib/db";
+
+export async function GET(request: NextRequest) {
+  const sql = getDb();
+  const { searchParams } = new URL(request.url);
+  const componentId = searchParams.get("componentId");
+  const search = searchParams.get("search");
+  const type = searchParams.get("type");
+  const limit = Math.min(Number(searchParams.get("limit") || 50), 200);
+  const offset = Number(searchParams.get("offset") || 0);
+
+  let query = `
+    SELECT
+      st.*,
+      c.name AS component_name,
+      c.part_number,
+      cat.name AS category_name
+    FROM stock_transactions st
+    JOIN components c ON st.component_id = c.id
+    LEFT JOIN categories cat ON c.category_id = cat.id
+    WHERE 1=1
+  `;
+  const params: (string | number)[] = [];
+  let paramIdx = 1;
+
+  if (componentId) {
+    query += ` AND st.component_id = $${paramIdx++}`;
+    params.push(Number(componentId));
+  }
+
+  if (search) {
+    query += ` AND (c.name ILIKE $${paramIdx} OR c.part_number ILIKE $${paramIdx})`;
+    params.push(`%${search}%`);
+    paramIdx++;
+  }
+
+  if (type && type !== "all") {
+    query += ` AND st.transaction_type = $${paramIdx++}`;
+    params.push(type);
+  }
+
+  query += ` ORDER BY st.created_at DESC LIMIT $${paramIdx++} OFFSET $${paramIdx++}`;
+  params.push(limit, offset);
+
+  const rows = await sql(query, params);
+
+  // Also get total count for pagination
+  let countQuery = `
+    SELECT COUNT(*) as total
+    FROM stock_transactions st
+    JOIN components c ON st.component_id = c.id
+    WHERE 1=1
+  `;
+  const countParams: (string | number)[] = [];
+  let countIdx = 1;
+
+  if (componentId) {
+    countQuery += ` AND st.component_id = $${countIdx++}`;
+    countParams.push(Number(componentId));
+  }
+  if (search) {
+    countQuery += ` AND (c.name ILIKE $${countIdx} OR c.part_number ILIKE $${countIdx})`;
+    countParams.push(`%${search}%`);
+    countIdx++;
+  }
+  if (type && type !== "all") {
+    countQuery += ` AND st.transaction_type = $${countIdx++}`;
+    countParams.push(type);
+  }
+
+  const countResult = await sql(countQuery, countParams);
+
+  return NextResponse.json({
+    transactions: rows,
+    total: Number(countResult[0].total),
+  });
+}
+
+export async function POST(request: NextRequest) {
+  const sql = getDb();
+  const body = await request.json();
+  const {
+    component_id,
+    transaction_type,
+    quantity,
+    unit_cost,
+    supplier,
+    supplier_order_ref,
+    notes,
+  } = body;
+
+  if (!component_id || !transaction_type || !quantity) {
+    return NextResponse.json(
+      { error: "component_id, transaction_type, and quantity are required" },
+      { status: 400 }
+    );
+  }
+
+  // Validate supplier_order_ref if provided - must match an existing PO
+  if (supplier_order_ref && supplier_order_ref.trim()) {
+    const poCheck = await sql(
+      `SELECT id FROM supplier_pos WHERE po_number = $1`,
+      [supplier_order_ref.trim()]
+    );
+    if (poCheck.length === 0) {
+      return NextResponse.json(
+        { error: `Purchase order "${supplier_order_ref}" not found. Please select a valid PO or leave the field empty.` },
+        { status: 400 }
+      );
+    }
+  }
+
+  const total_cost = unit_cost ? Number(unit_cost) * Number(quantity) : null;
+
+  // Insert the stock transaction record
+  const insertParams = [
+    component_id,
+    transaction_type,
+    Number(quantity),
+    unit_cost ? Number(unit_cost) : null,
+    total_cost,
+    supplier || null,
+    supplier_order_ref || null,
+    notes || null,
+  ];
+  const rows = await sql(
+    `INSERT INTO stock_transactions (component_id, transaction_type, quantity, unit_cost, total_cost, supplier, supplier_order_ref, notes)
+     VALUES ($1, $2, $3, $4, $5, $6, $7, $8)
+     RETURNING *`,
+    insertParams
+  );
+
+  // Update the component's stock_quantity
+  const qtyChange =
+    transaction_type === "consumption"
+      ? -Math.abs(Number(quantity))
+      : Math.abs(Number(quantity));
+
+  await sql(
+    `UPDATE components SET stock_quantity = stock_quantity + $1, updated_at = NOW() WHERE id = $2`,
+    [qtyChange, component_id]
+  );
+
+  return NextResponse.json(rows[0], { status: 201 });
+}