import type { SchemaData } from '../../../types/index';
import { DeviceCategory } from '../../../types/index';
import type { GraphNodeConfig, GraphEdgeConfig, GraphBuildResult } from '../../../types/graph';
import { createPortItem } from '../ports/port-config';
import { createEdgeConfig } from '../edges/edge-config';
import { autoLayout, type LayoutResult } from '../layout/auto-layout';
import { resolvePortSides } from './port-side-resolver';
import {
  CROSS_WIDTH,
  CROSS_HEIGHT,
  SPLICE_SIZE,
  DEVICE_MIN_WIDTH,
  DEVICE_MIN_HEIGHT,
  DEVICE_HEADER_HEIGHT,
  CARD_WIDTH,
  CARD_HEIGHT,
} from '../../../constants/sizes';

function getDeviceShape(category: DeviceCategory, deviceName: string, marking: string): string {
  if (
    category === DeviceCategory.CrossOptical ||
    category === DeviceCategory.CrossCopper
  ) {
    return 'cross-device-node';
  }
  if (
    deviceName.toLowerCase().includes('муфта') ||
    marking.toLowerCase().includes('мток')
  ) {
    return 'splice-node';
  }
  return 'device-node';
}

function getDeviceSize(
  category: DeviceCategory,
  deviceName: string,
  marking: string,
  portCount: number,
  cardCount: number,
): { width: number; height: number } {
  if (
    category === DeviceCategory.CrossOptical ||
    category === DeviceCategory.CrossCopper
  ) {
    return { width: CROSS_WIDTH, height: CROSS_HEIGHT };
  }
  if (
    deviceName.toLowerCase().includes('муфта') ||
    marking.toLowerCase().includes('мток')
  ) {
    return { width: SPLICE_SIZE, height: SPLICE_SIZE };
  }
  const portHeight = Math.max(portCount * 22, 60);
  const cardsHeight = cardCount > 0 ? cardCount * (CARD_HEIGHT + 6) + 8 : 0;
  const bodyHeight = cardCount > 0 && portCount > 0
    ? cardsHeight + portHeight
    : Math.max(portHeight, cardsHeight);
  return {
    width: DEVICE_MIN_WIDTH,
    height: Math.max(DEVICE_MIN_HEIGHT, DEVICE_HEADER_HEIGHT + bodyHeight + 10),
  };
}

export function buildGraphData(
  data: SchemaData,
  routerType: 'manhattan' | 'normal' = 'manhattan',
): GraphBuildResult {
  const layout: LayoutResult = autoLayout(data);
  const nodes: GraphNodeConfig[] = [];
  const edges: GraphEdgeConfig[] = [];

  // Resolve port sides based on device positions
  const devicePositions = new Map<string, { x: number; y: number }>();
  for (const [id, pos] of layout.nodePositions.entries()) {
    devicePositions.set(id, { x: pos.x, y: pos.y });
  }
  const portSideMap = resolvePortSides(data, devicePositions);

  // 1. Create site nodes
  for (const site of data.sites) {
    const sitePos = layout.sitePositions.get(site.id);
    if (!sitePos) continue;

    nodes.push({
      id: site.id,
      shape: 'site-node',
      x: sitePos.x,
      y: sitePos.y,
      width: sitePos.width,
      height: sitePos.height,
      data: {
        name: site.name,
        address: site.address,
        erpCode: site.erpCode,
        code1C: site.code1C,
        status: site.status,
        entityType: 'site',
        entityId: site.id,
      },
      zIndex: 1,
    });
  }

  // 2. Create device nodes with ports
  for (const device of data.devices) {
    const pos = layout.nodePositions.get(device.id);
    if (!pos) continue;

    const devicePorts = data.ports.filter(
      (p) => p.deviceId === device.id && !p.cardId,
    );
    const shape = getDeviceShape(device.category, device.name, device.marking);
    const deviceCards = data.cards.filter((c) => c.deviceId === device.id && c.visible);
    const size = getDeviceSize(device.category, device.name, device.marking, devicePorts.length, deviceCards.length);

    const hasCards = deviceCards.length > 0;
    const cardsEndY = hasCards
      ? DEVICE_HEADER_HEIGHT + deviceCards.length * (CARD_HEIGHT + 6) + 8
      : 0;

    const leftDevicePorts = devicePorts.filter(
      (p) => (portSideMap.get(p.id) ?? p.side) === 'left',
    );
    const rightDevicePorts = devicePorts.filter(
      (p) => (portSideMap.get(p.id) ?? p.side) === 'right',
    );

    const portItems = devicePorts.map((port) => {
      const resolvedSide = portSideMap.get(port.id) ?? port.side;
      const label = port.slotName ? `${port.slotName}:${port.name}` : port.name;

      let portArgs: { x: number; y: number } | undefined;
      if (hasCards) {
        const sameSidePorts = resolvedSide === 'left' ? leftDevicePorts : rightDevicePorts;
        const indexInSide = sameSidePorts.indexOf(port);
        const portSpacing = 22;
        portArgs = {
          x: resolvedSide === 'left' ? 0 : size.width,
          y: cardsEndY + portSpacing * (indexInSide + 0.5),
        };
      }

      return createPortItem(port.id, resolvedSide, label, port.labelColor || undefined, portArgs);
    });

    const leftPosition = hasCards ? 'absolute' : 'left';
    const rightPosition = hasCards ? 'absolute' : 'right';

    const node: GraphNodeConfig = {
      id: device.id,
      shape,
      x: pos.x,
      y: pos.y,
      width: size.width,
      height: size.height,
      data: {
        name: device.name,
        networkName: device.networkName,
        ipAddress: device.ipAddress,
        marking: device.marking,
        id1: device.id1,
        id2: device.id2,
        group: device.group,
        category: device.category,
        status: device.status,
        entityType: 'device',
        entityId: device.id,
      },
      ports: {
        groups: {
          left: {
            position: leftPosition,
            attrs: {
              circle: {
                r: 6,
                magnet: true,
                stroke: '#8c8c8c',
                strokeWidth: 1,
                fill: '#fff',
              },
            },
            label: {
              position: { name: 'top', args: { y: -8 } },
            },
          },
          right: {
            position: rightPosition,
            attrs: {
              circle: {
                r: 6,
                magnet: true,
                stroke: '#8c8c8c',
                strokeWidth: 1,
                fill: '#fff',
              },
            },
            label: {
              position: { name: 'top', args: { y: -8 } },
            },
          },
        },
        items: portItems,
      },
      parent: device.siteId,
      zIndex: 2,
    };

    nodes.push(node);
  }

  // 3. Create card nodes (embedded inside devices)
  for (const card of data.cards) {
    if (!card.visible) continue;

    const parentDevice = data.devices.find((d) => d.id === card.deviceId);
    if (!parentDevice) continue;

    const parentPos = layout.nodePositions.get(card.deviceId);
    if (!parentPos) continue;

    const cardPorts = data.ports.filter((p) => p.cardId === card.id);
    const cardIndex = data.cards.filter(
      (c) => c.deviceId === card.deviceId && c.visible,
    ).indexOf(card);

    const cardX = parentPos.x + 10;
    const cardY = parentPos.y + DEVICE_HEADER_HEIGHT + 8 + cardIndex * (CARD_HEIGHT + 6);

    const portItems = cardPorts.map((port) => {
      const resolvedSide = portSideMap.get(port.id) ?? port.side;
      const label = `${port.slotName}:${port.name}`;
      return createPortItem(port.id, resolvedSide, label, port.labelColor || undefined);
    });

    nodes.push({
      id: card.id,
      shape: 'card-node',
      x: cardX,
      y: cardY,
      width: CARD_WIDTH,
      height: CARD_HEIGHT,
      data: {
        slotName: card.slotName,
        networkName: card.networkName,
        status: card.status,
        entityType: 'card',
        entityId: card.id,
      },
      ports: {
        groups: {
          left: {
            position: 'left',
            attrs: {
              circle: {
                r: 5,
                magnet: true,
                stroke: '#8c8c8c',
                strokeWidth: 1,
                fill: '#fff',
              },
            },
            label: {
              position: { name: 'top', args: { y: -6 } },
            },
          },
          right: {
            position: 'right',
            attrs: {
              circle: {
                r: 5,
                magnet: true,
                stroke: '#8c8c8c',
                strokeWidth: 1,
                fill: '#fff',
              },
            },
            label: {
              position: { name: 'top', args: { y: -6 } },
            },
          },
        },
        items: portItems,
      },
      parent: card.deviceId,
      zIndex: 3,
    });
  }

  // 4. Create edges from lines
  for (const line of data.lines) {
    const portA = data.ports.find((p) => p.id === line.portAId);
    const portZ = data.ports.find((p) => p.id === line.portZId);
    if (!portA || !portZ) continue;

    const sourceCellId = portA.cardId ?? portA.deviceId;
    const targetCellId = portZ.cardId ?? portZ.deviceId;

    edges.push(
      createEdgeConfig(
        line.id,
        sourceCellId,
        line.portAId,
        targetCellId,
        line.portZId,
        line.status,
        line.medium,
        line.lineStyle,
        line.name,
        routerType,
      ),
    );
  }

  return { nodes, edges };
}