export type ProductItem = {
  id: number;
  product_code: string;
  name: string;
  category: string;
  description: string | null;
  price: number;
  sku: string | null;
  variations: string | null;
  average_rating: number | null;
  product_dimensions: string | null;
};

export type InventoryItem = {
  id: number;
  quantity: number;
  last_updated: string;
  product: Pick<ProductItem, "id" | "product_code" | "name" | "category" | "price">;
  warehouse: {
    name: string;
    location_description?: string | null;
  };
};

export type ScanEvent = {
  id: number;
  timestamp: string;
  model_used: string | null;
  cv_results: {
    validation_status?: string;
    product_code?: string;
    product_name?: string;
    product_category?: string;
    product_sku?: string;
    product_price?: number;
    error_message?: string;
    payload_version?: number;
    quantity_before?: number;
    quantity_after?: number;
  };
};

export type WarehouseInfo = {
  id: number;
  name: string;
  location_description: string | null;
};

export type WarehouseMetrics = {
  warehouse_id: number;
  warehouse_name: string;
  total_products: number;
  total_quantity: number;
};

export type VLMStatus = {
  available: boolean;
  model: string;
  endpoint: string;
  gpu_usage?: number;
  memory_usage?: number;
  temperature?: number;
};

export type AnalysisResult = {
  id: number;
  timestamp: string;
  prompt: string;
  response: string;
  latency_ms: number;
  model_used: string;
  analysis_type: string;
};

const now = Date.now();
const minutesAgo = (minutes: number) => new Date(now - minutes * 60_000).toISOString();

export const products: ProductItem[] = [
  {
    id: 1,
    product_code: "DX-PROP-1045-CF",
    name: "Carbon Fiber Propeller Set 10x4.5",
    category: "Drone Parts",
    description: "Balanced propeller pair for last-mile delivery quadcopters.",
    price: 34.5,
    sku: "PROP-1045-CF",
    variations: "Clockwise / Counter-clockwise",
    average_rating: 4.8,
    product_dimensions: "10 x 4.5 in"
  },
  {
    id: 2,
    product_code: "DX-BAT-6S-22000",
    name: "6S Smart Battery Pack 22000mAh",
    category: "Power Systems",
    description: "High-discharge battery with telemetry and thermal protection.",
    price: 289.0,
    sku: "BAT-6S-22K",
    variations: "XT90 / AS150 connector",
    average_rating: 4.7,
    product_dimensions: "185 x 74 x 62 mm"
  },
  {
    id: 3,
    product_code: "DX-PAYLOAD-BOX-M",
    name: "Insulated Payload Box Medium",
    category: "Payload",
    description: "Reusable insulated delivery container for temperature-sensitive parcels.",
    price: 72.25,
    sku: "BOX-INS-M",
    variations: "Blue / White",
    average_rating: 4.6,
    product_dimensions: "38 x 28 x 22 cm"
  },
  {
    id: 4,
    product_code: "DX-CAM-C270-MNT",
    name: "C270 Scanner Camera Mount",
    category: "Scanner",
    description: "Vibration-damped mount for barcode and QR scanning cameras.",
    price: 18.95,
    sku: "CAM-MNT-C270",
    variations: "Standard rail",
    average_rating: 4.4,
    product_dimensions: "62 x 42 x 35 mm"
  },
  {
    id: 5,
    product_code: "DX-FC-AERO-V2",
    name: "AeroStack Flight Controller V2",
    category: "Avionics",
    description: "Flight controller configured for autonomous warehouse-to-drone handoff.",
    price: 219.99,
    sku: "FC-AERO-V2",
    variations: "CAN / UART expansion",
    average_rating: 4.9,
    product_dimensions: "45 x 45 mm"
  },
  {
    id: 6,
    product_code: "DX-LABEL-QR-500",
    name: "Tamper-Evident QR Label Roll",
    category: "Warehouse Supplies",
    description: "Weather-resistant QR labels for product and tote tracking.",
    price: 41.75,
    sku: "LBL-QR-500",
    variations: "500 labels",
    average_rating: 4.5,
    product_dimensions: "50 x 30 mm"
  },
  {
    id: 7,
    product_code: "DX-DOCK-CHG-4",
    name: "Four-Bay Battery Charging Dock",
    category: "Power Systems",
    description: "Managed charging dock for rotating flight batteries.",
    price: 640.0,
    sku: "DOCK-CHG-4",
    variations: "EU / US power cable",
    average_rating: 4.8,
    product_dimensions: "52 x 36 x 18 cm"
  },
  {
    id: 8,
    product_code: "DX-LIDAR-MINI",
    name: "Mini Obstacle Avoidance LiDAR",
    category: "Sensors",
    description: "Short-range LiDAR module for indoor navigation and docking.",
    price: 128.4,
    sku: "LIDAR-MINI",
    variations: "Front / Downward mount",
    average_rating: 4.3,
    product_dimensions: "43 x 31 x 26 mm"
  }
];

export const warehouses: WarehouseInfo[] = [
  {
    id: 1,
    name: "Istanbul Fulfillment Hub",
    location_description: "Primary drone dispatch and inventory staging area"
  },
  {
    id: 2,
    name: "Ankara Micro Hub",
    location_description: "Regional replenishment and spare-parts buffer"
  }
];

export const inventory: InventoryItem[] = [
  { id: 101, quantity: 128, last_updated: minutesAgo(9), product: products[0], warehouse: warehouses[0] },
  { id: 102, quantity: 42, last_updated: minutesAgo(18), product: products[1], warehouse: warehouses[0] },
  { id: 103, quantity: 215, last_updated: minutesAgo(42), product: products[2], warehouse: warehouses[0] },
  { id: 104, quantity: 17, last_updated: minutesAgo(54), product: products[3], warehouse: warehouses[0] },
  { id: 105, quantity: 9, last_updated: minutesAgo(76), product: products[4], warehouse: warehouses[0] },
  { id: 106, quantity: 640, last_updated: minutesAgo(88), product: products[5], warehouse: warehouses[0] },
  { id: 107, quantity: 6, last_updated: minutesAgo(105), product: products[6], warehouse: warehouses[1] },
  { id: 108, quantity: 23, last_updated: minutesAgo(132), product: products[7], warehouse: warehouses[1] }
];

export const scans: ScanEvent[] = [
  {
    id: 501,
    timestamp: minutesAgo(3),
    model_used: "qr_scanner_demo",
    cv_results: {
      validation_status: "valid",
      product_code: products[1].product_code,
      product_name: products[1].name,
      product_category: products[1].category,
      product_sku: products[1].sku ?? undefined,
      product_price: products[1].price,
      payload_version: 2,
      quantity_before: 41,
      quantity_after: 42
    }
  },
  {
    id: 502,
    timestamp: minutesAgo(12),
    model_used: "qr_scanner_demo",
    cv_results: {
      validation_status: "valid",
      product_code: products[5].product_code,
      product_name: products[5].name,
      product_category: products[5].category,
      product_sku: products[5].sku ?? undefined,
      product_price: products[5].price,
      payload_version: 2,
      quantity_before: 639,
      quantity_after: 640
    }
  },
  {
    id: 503,
    timestamp: minutesAgo(21),
    model_used: "qr_scanner_demo",
    cv_results: {
      validation_status: "valid",
      product_code: products[0].product_code,
      product_name: products[0].name,
      product_category: products[0].category,
      product_sku: products[0].sku ?? undefined,
      product_price: products[0].price,
      payload_version: 2,
      quantity_before: 127,
      quantity_after: 128
    }
  },
  {
    id: 504,
    timestamp: minutesAgo(37),
    model_used: "qr_scanner_demo",
    cv_results: {
      validation_status: "valid",
      product_code: products[3].product_code,
      product_name: products[3].name,
      product_category: products[3].category,
      product_sku: products[3].sku ?? undefined,
      product_price: products[3].price,
      payload_version: 2,
      quantity_before: 16,
      quantity_after: 17
    }
  }
];

export const analysisHistory: AnalysisResult[] = [
  {
    id: 801,
    timestamp: minutesAgo(11),
    prompt: "Analyze this warehouse scene for operational risks.",
    response: "Demo analysis: inbound tote lane is clear, QR label visibility is good, and the battery dock area needs replenishment within the next shift.",
    latency_ms: 1240,
    model_used: "gemma-3-demo",
    analysis_type: "warehouse"
  },
  {
    id: 802,
    timestamp: minutesAgo(28),
    prompt: "List visible inventory issues.",
    response: "Demo analysis: low stock on charging docks and flight controllers; all other highlighted categories remain above reorder thresholds.",
    latency_ms: 980,
    model_used: "gemma-3-demo",
    analysis_type: "inventory"
  }
];

export const delay = <T,>(value: T, ms = 180): Promise<T> =>
  new Promise((resolve) => window.setTimeout(() => resolve(value), ms));

export const getWarehouseMetrics = (warehouseId = 1): WarehouseMetrics => {
  const warehouse = warehouses.find((item) => item.id === warehouseId) ?? warehouses[0];
  const rows = inventory.filter((item) => item.warehouse.name === warehouse.name);
  return {
    warehouse_id: warehouse.id,
    warehouse_name: warehouse.name,
    total_products: rows.length,
    total_quantity: rows.reduce((sum, item) => sum + item.quantity, 0)
  };
};

export const dashboardStats = {
  totalInventory: inventory.reduce((sum, item) => sum + item.quantity, 0),
  lowStockItems: inventory.filter((item) => item.quantity > 0 && item.quantity <= 20).length,
  outOfStockItems: 0,
  activeDrones: 7,
  totalOrders: 86,
  pendingOrders: 14,
  completedOrdersToday: 31,
  warehouseZones: 6,
  scanAccuracy: 98.4,
  fulfillmentRate: 94
};

export const recentActivity = [
  { id: 1, type: "order", message: "Order DX-2409 dispatched to Kadikoy route", time: "5 min ago", status: "success" },
  { id: 2, type: "inventory", message: "Low stock alert: Four-Bay Battery Charging Dock", time: "18 min ago", status: "warning" },
  { id: 3, type: "scan", message: "QR scan verified Smart Battery Pack 22000mAh", time: "21 min ago", status: "success" },
  { id: 4, type: "warehouse", message: "Istanbul Hub cycle count completed for Zone C", time: "44 min ago", status: "info" }
];

export const orders = [
  { id: "DX-2409", destination: "Kadikoy Medical Center", status: "In flight", priority: "High", eta: "14 min", items: 3 },
  { id: "DX-2410", destination: "Besiktas Micro Hub", status: "Picking", priority: "Normal", eta: "38 min", items: 6 },
  { id: "DX-2411", destination: "Uskudar Pharmacy", status: "Ready", priority: "High", eta: "22 min", items: 2 },
  { id: "DX-2412", destination: "Levent Service Point", status: "Queued", priority: "Normal", eta: "52 min", items: 4 }
];

export const weeklyThroughput = [
  { day: "Mon", orders: 42, scans: 88 },
  { day: "Tue", orders: 55, scans: 104 },
  { day: "Wed", orders: 49, scans: 96 },
  { day: "Thu", orders: 61, scans: 118 },
  { day: "Fri", orders: 74, scans: 132 },
  { day: "Sat", orders: 58, scans: 111 }
];

export const getDemoQrDataUrl = (label: string) => {
  const cells = Array.from({ length: 49 }, (_, index) => {
    const x = index % 7;
    const y = Math.floor(index / 7);
    const on = (label.charCodeAt(index % label.length) + index + x * y) % 3 !== 0;
    return on ? `<rect x="${x * 12}" y="${y * 12}" width="10" height="10" rx="1" />` : "";
  }).join("");
  const svg = `<svg xmlns="http://www.w3.org/2000/svg" width="140" height="140" viewBox="0 0 140 140"><rect width="140" height="140" fill="white"/><g transform="translate(28 20)" fill="#082f49">${cells}</g><text x="70" y="126" text-anchor="middle" font-family="monospace" font-size="8" fill="#082f49">${label}</text></svg>`;
  return `data:image/svg+xml;charset=UTF-8,${encodeURIComponent(svg)}`;
};