import { DeesElement, property, html, customElement, type TemplateResult, css, state, cssManager } from '@design.estate/dees-element';
import * as appstate from '../appstate.js';
import { viewHostCss } from './shared/css.js';
import { type IStatsTile } from '@design.estate/dees-catalog';

declare global {
  interface HTMLElementTagNameMap {
    'ops-view-network': OpsViewNetwork;
  }
}

interface INetworkRequest {
  id: string;
  timestamp: number;
  method: string;
  url: string;
  hostname: string;
  port: number;
  protocol: 'http' | 'https' | 'tcp' | 'udp';
  statusCode?: number;
  duration: number;
  bytesIn: number;
  bytesOut: number;
  remoteIp: string;
  route?: string;
}

@customElement('ops-view-network')
export class OpsViewNetwork extends DeesElement {
  @state()
  private statsState = appstate.statsStatePart.getState();

  @state()
  private networkState = appstate.networkStatePart.getState();

  @state()
  private selectedTimeRange: '1m' | '5m' | '15m' | '1h' | '24h' = '5m';

  @state()
  private selectedProtocol: 'all' | 'http' | 'https' | 'smtp' | 'dns' = 'all';

  @state()
  private networkRequests: INetworkRequest[] = [];

  @state()
  private trafficData: Array<{ x: string | number; y: number }> = [];

  @state()
  private isLoading = false;
  
  private lastTrafficUpdateTime = 0;
  private trafficUpdateInterval = 1000; // Update every 1 second
  private requestCountHistory = new Map<number, number>(); // Track requests per time bucket
  private trafficUpdateTimer: any = null;
  
  // Track bytes for calculating true per-second throughput
  private lastBytesIn = 0;
  private lastBytesOut = 0;
  private lastBytesSampleTime = 0;

  constructor() {
    super();
    this.subscribeToStateParts();
    this.initializeTrafficData();
    this.updateNetworkData();
    this.startTrafficUpdateTimer();
  }
  
  async disconnectedCallback() {
    await super.disconnectedCallback();
    this.stopTrafficUpdateTimer();
  }

  private subscribeToStateParts() {
    appstate.statsStatePart.state.subscribe((state) => {
      this.statsState = state;
      this.updateNetworkData();
    });
    
    appstate.networkStatePart.state.subscribe((state) => {
      this.networkState = state;
      this.updateNetworkData();
    });
  }
  
  private initializeTrafficData() {
    const now = Date.now();
    const timeRanges = {
      '1m': 60 * 1000,
      '5m': 5 * 60 * 1000,
      '15m': 15 * 60 * 1000,
      '1h': 60 * 60 * 1000,
      '24h': 24 * 60 * 60 * 1000,
    };
    
    const range = timeRanges[this.selectedTimeRange];
    const bucketSize = range / 60;
    
    // Initialize with empty data points
    this.trafficData = Array.from({ length: 60 }, (_, i) => {
      const time = now - ((59 - i) * bucketSize);
      return {
        x: new Date(time).toISOString(),
        y: 0,
      };
    });
    
    this.lastTrafficUpdateTime = now;
  }

  public static styles = [
    cssManager.defaultStyles,
    viewHostCss,
    css`
      :host {
        display: block;
        padding: 24px;
      }

      .networkContainer {
        display: flex;
        flex-direction: column;
        gap: 24px;
      }

      .controlBar {
        display: flex;
        gap: 16px;
        align-items: center;
        flex-wrap: wrap;
        margin-bottom: 24px;
      }

      .controlGroup {
        display: flex;
        gap: 8px;
        align-items: center;
      }

      .controlLabel {
        font-size: 14px;
        color: ${cssManager.bdTheme('#666', '#999')};
        margin-right: 8px;
      }

      dees-statsgrid {
        margin-bottom: 24px;
      }

      dees-chart-area {
        margin-bottom: 24px;
      }

      .protocolBadge {
        display: inline-flex;
        align-items: center;
        padding: 4px 8px;
        border-radius: 4px;
        font-size: 12px;
        font-weight: 500;
      }

      .protocolBadge.http {
        background: ${cssManager.bdTheme('#e3f2fd', '#1a2c3a')};
        color: ${cssManager.bdTheme('#1976d2', '#5a9fd4')};
      }

      .protocolBadge.https {
        background: ${cssManager.bdTheme('#e8f5e9', '#1a3a1a')};
        color: ${cssManager.bdTheme('#388e3c', '#66bb6a')};
      }

      .protocolBadge.tcp {
        background: ${cssManager.bdTheme('#fff3e0', '#3a2a1a')};
        color: ${cssManager.bdTheme('#f57c00', '#ff9933')};
      }

      .protocolBadge.smtp {
        background: ${cssManager.bdTheme('#f3e5f5', '#2a1a3a')};
        color: ${cssManager.bdTheme('#7b1fa2', '#ba68c8')};
      }

      .protocolBadge.dns {
        background: ${cssManager.bdTheme('#e0f2f1', '#1a3a3a')};
        color: ${cssManager.bdTheme('#00796b', '#4db6ac')};
      }

      .statusBadge {
        display: inline-flex;
        align-items: center;
        padding: 4px 8px;
        border-radius: 4px;
        font-size: 12px;
        font-weight: 500;
      }

      .statusBadge.success {
        background: ${cssManager.bdTheme('#e8f5e9', '#1a3a1a')};
        color: ${cssManager.bdTheme('#388e3c', '#66bb6a')};
      }

      .statusBadge.error {
        background: ${cssManager.bdTheme('#ffebee', '#3a1a1a')};
        color: ${cssManager.bdTheme('#d32f2f', '#ff6666')};
      }

      .statusBadge.warning {
        background: ${cssManager.bdTheme('#fff3e0', '#3a2a1a')};
        color: ${cssManager.bdTheme('#f57c00', '#ff9933')};
      }
    `,
  ];

  public render() {
    return html`
      <ops-sectionheading>Network Activity</ops-sectionheading>
      
      <div class="networkContainer">
        <!-- Control Bar -->
        <div class="controlBar">
          <div class="controlGroup">
            <span class="controlLabel">Time Range:</span>
            <dees-button-group>
              ${(['1m', '5m', '15m', '1h', '24h'] as const).map(range => html`
                <dees-button 
                  @click=${() => this.handleTimeRangeChange(range)}
                  .type=${this.selectedTimeRange === range ? 'highlighted' : 'normal'}
                >
                  ${range}
                </dees-button>
              `)}
            </dees-button-group>
          </div>

          <div class="controlGroup">
            <span class="controlLabel">Protocol:</span>
            <dees-input-dropdown
              .options=${[
                { key: 'all', label: 'All Protocols' },
                { key: 'http', label: 'HTTP' },
                { key: 'https', label: 'HTTPS' },
                { key: 'smtp', label: 'SMTP' },
                { key: 'dns', label: 'DNS' },
              ]}
              .selectedOption=${{ key: this.selectedProtocol, label: this.getProtocolLabel(this.selectedProtocol) }}
              @selectedOption=${(e: CustomEvent) => this.selectedProtocol = e.detail.key}
            ></dees-input-dropdown>
          </div>

          <div style="margin-left: auto;">
            <dees-button 
              @click=${() => this.refreshData()}
              .disabled=${this.isLoading}
            >
              ${this.isLoading ? html`<dees-spinner size="small"></dees-spinner>` : 'Refresh'}
            </dees-button>
          </div>
        </div>

        <!-- Stats Grid -->
        ${this.renderNetworkStats()}

        <!-- Traffic Chart -->
        <dees-chart-area
          .label=${'Network Traffic'}
          .series=${[
            {
              name: 'Throughput (Mbps)',
              data: this.trafficData,
            }
          ]}
          .yAxisFormatter=${(val: number) => `${val} Mbps`}
        ></dees-chart-area>

        <!-- Top IPs Section -->
        ${this.renderTopIPs()}

        <!-- Requests Table -->
        <dees-table
          .data=${this.getFilteredRequests()}
          .displayFunction=${(req: INetworkRequest) => ({
            Time: new Date(req.timestamp).toLocaleTimeString(),
            Protocol: html`<span class="protocolBadge ${req.protocol}">${req.protocol.toUpperCase()}</span>`,
            Method: req.method,
            'Host:Port': `${req.hostname}:${req.port}`,
            Path: this.truncateUrl(req.url),
            Status: this.renderStatus(req.statusCode),
            Duration: `${req.duration}ms`,
            'In/Out': `${this.formatBytes(req.bytesIn)} / ${this.formatBytes(req.bytesOut)}`,
            'Remote IP': req.remoteIp,
          })}
          .dataActions=${[
            {
              name: 'View Details',
              iconName: 'magnifyingGlass',
              type: ['inRow', 'doubleClick', 'contextmenu'],
              actionFunc: async (actionData) => {
                await this.showRequestDetails(actionData.item);
              }
            }
          ]}
          heading1="Recent Network Activity"
          heading2="Last ${this.selectedTimeRange} of network requests"
          searchable
          .pagination=${true}
          .paginationSize=${50}
          dataName="request"
        ></dees-table>
      </div>
    `;
  }

  private async showRequestDetails(request: INetworkRequest) {
    const { DeesModal } = await import('@design.estate/dees-catalog');
    
    await DeesModal.createAndShow({
      heading: 'Request Details',
      content: html`
        <div style="padding: 20px;">
          <dees-dataview-codebox
            .heading=${'Request Information'}
            progLang="json"
            .codeToDisplay=${JSON.stringify({
              id: request.id,
              timestamp: new Date(request.timestamp).toISOString(),
              protocol: request.protocol,
              method: request.method,
              url: request.url,
              hostname: request.hostname,
              port: request.port,
              statusCode: request.statusCode,
              duration: `${request.duration}ms`,
              bytesIn: request.bytesIn,
              bytesOut: request.bytesOut,
              remoteIp: request.remoteIp,
              route: request.route,
            }, null, 2)}
          ></dees-dataview-codebox>
        </div>
      `,
      menuOptions: [
        {
          name: 'Copy Request ID',
          iconName: 'copy',
          action: async () => {
            await navigator.clipboard.writeText(request.id);
            console.log('Request ID copied to clipboard');
          }
        }
      ]
    });
  }

  private getFilteredRequests(): INetworkRequest[] {
    if (this.selectedProtocol === 'all') {
      return this.networkRequests;
    }
    
    // Map protocol filter to actual protocol values
    const protocolMap: Record<string, string[]> = {
      'http': ['http'],
      'https': ['https'],
      'smtp': ['tcp'], // SMTP runs over TCP
      'dns': ['udp'], // DNS typically runs over UDP
    };
    
    const allowedProtocols = protocolMap[this.selectedProtocol] || [this.selectedProtocol];
    return this.networkRequests.filter(req => allowedProtocols.includes(req.protocol));
  }

  private renderStatus(statusCode?: number): TemplateResult {
    if (!statusCode) {
      return html`<span class="statusBadge warning">N/A</span>`;
    }
    
    const statusClass = statusCode >= 200 && statusCode < 300 ? 'success' :
                       statusCode >= 400 ? 'error' : 'warning';
    
    return html`<span class="statusBadge ${statusClass}">${statusCode}</span>`;
  }

  private truncateUrl(url: string, maxLength = 50): string {
    if (url.length <= maxLength) return url;
    return url.substring(0, maxLength - 3) + '...';
  }

  private getProtocolLabel(protocol: string): string {
    const labels: Record<string, string> = {
      'all': 'All Protocols',
      'http': 'HTTP',
      'https': 'HTTPS',
      'smtp': 'SMTP',
      'dns': 'DNS',
    };
    return labels[protocol] || protocol.toUpperCase();
  }

  private formatNumber(num: number): string {
    if (num >= 1000000) {
      return (num / 1000000).toFixed(1) + 'M';
    } else if (num >= 1000) {
      return (num / 1000).toFixed(1) + 'K';
    }
    return num.toFixed(0);
  }

  private formatBytes(bytes: number): string {
    const units = ['B', 'KB', 'MB', 'GB'];
    let size = bytes;
    let unitIndex = 0;
    
    while (size >= 1024 && unitIndex < units.length - 1) {
      size /= 1024;
      unitIndex++;
    }
    
    return `${size.toFixed(1)} ${units[unitIndex]}`;
  }

  private calculateRequestsPerSecond(): number {
    // Calculate from actual request data in the last minute
    const oneMinuteAgo = Date.now() - 60000;
    const recentRequests = this.networkRequests.filter(req => req.timestamp >= oneMinuteAgo);
    return Math.round(recentRequests.length / 60);
  }

  private calculateThroughput(): { in: number; out: number } {
    // Use real throughput data from network state
    return {
      in: this.networkState.throughputRate.bytesInPerSecond,
      out: this.networkState.throughputRate.bytesOutPerSecond,
    };
  }

  private renderNetworkStats(): TemplateResult {
    const reqPerSec = this.calculateRequestsPerSecond();
    const throughput = this.calculateThroughput();
    const activeConnections = this.statsState.serverStats?.activeConnections || 0;

    // Use actual traffic data for trends (last 20 points)
    const trendData = this.trafficData.slice(-20).map(point => point.y);
    
    // If we don't have enough data, pad with the current value
    while (trendData.length < 20) {
      trendData.unshift(reqPerSec);
    }

    const tiles: IStatsTile[] = [
      {
        id: 'connections',
        title: 'Active Connections',
        value: activeConnections,
        type: 'number',
        icon: 'plug',
        color: activeConnections > 100 ? '#f59e0b' : '#22c55e',
        description: `Total: ${this.statsState.serverStats?.totalConnections || 0}`,
        actions: [
          {
            name: 'View Details',
            iconName: 'magnifyingGlass',
            action: async () => {
            },
          },
        ],
      },
      {
        id: 'requests',
        title: 'Requests/sec',
        value: reqPerSec,
        type: 'trend',
        icon: 'chartLine',
        color: '#3b82f6',
        trendData: trendData,
        description: `${this.formatNumber(reqPerSec)} req/s`,
      },
      {
        id: 'throughputIn',
        title: 'Throughput In',
        value: this.formatBytes(throughput.in),
        unit: '/s',
        type: 'number',
        icon: 'download',
        color: '#22c55e',
      },
      {
        id: 'throughputOut',
        title: 'Throughput Out',
        value: this.formatBytes(throughput.out),
        unit: '/s',
        type: 'number',
        icon: 'upload',
        color: '#8b5cf6',
      },
    ];

    return html`
      <dees-statsgrid 
        .tiles=${tiles}
        .minTileWidth=${200}
        .gridActions=${[
          {
            name: 'Export Data',
            iconName: 'fileExport',
            action: async () => {
              console.log('Export feature coming soon');
            },
          },
        ]}
      ></dees-statsgrid>
    `;
  }

  private async refreshData() {
    this.isLoading = true;
    await appstate.statsStatePart.dispatchAction(appstate.fetchAllStatsAction, null);
    await appstate.networkStatePart.dispatchAction(appstate.fetchNetworkStatsAction, null);
    await this.updateNetworkData();
    this.isLoading = false;
  }
  
  private renderTopIPs(): TemplateResult {
    if (this.networkState.topIPs.length === 0) {
      return html``;
    }
    
    return html`
      <dees-table
        .data=${this.networkState.topIPs}
        .displayFunction=${(ipData: { ip: string; count: number }) => ({
          'IP Address': ipData.ip,
          'Connections': ipData.count,
          'Percentage': ((ipData.count / this.networkState.connections.length) * 100).toFixed(1) + '%',
        })}
        heading1="Top Connected IPs"
        heading2="IPs with most active connections"
        .pagination=${false}
        dataName="ip"
      ></dees-table>
    `;
  }

  private async updateNetworkData() {
    // Convert connection data to network requests format
    if (this.networkState.connections.length > 0) {
      this.networkRequests = this.networkState.connections.map((conn, index) => ({
        id: conn.id,
        timestamp: conn.startTime,
        method: 'GET', // Default method for proxy connections
        url: '/',
        hostname: conn.remoteAddress,
        port: conn.protocol === 'https' ? 443 : 80,
        protocol: conn.protocol === 'https' || conn.protocol === 'http' ? conn.protocol : 'tcp',
        statusCode: conn.state === 'connected' ? 200 : undefined,
        duration: Date.now() - conn.startTime,
        bytesIn: conn.bytesReceived,
        bytesOut: conn.bytesSent,
        remoteIp: conn.remoteAddress,
        route: 'proxy',
      }));
    } else {
      this.networkRequests = [];
    }
    
    // Generate traffic data based on request history
    this.updateTrafficData();
  }

  private updateTrafficData() {
    const now = Date.now();
    const timeRanges = {
      '1m': 60 * 1000,
      '5m': 5 * 60 * 1000,
      '15m': 15 * 60 * 1000,
      '1h': 60 * 60 * 1000,
      '24h': 24 * 60 * 60 * 1000,
    };
    
    const range = timeRanges[this.selectedTimeRange];
    const bucketSize = range / 60; // 60 data points
    
    // Check if enough time has passed to add a new data point
    const timeSinceLastUpdate = now - this.lastTrafficUpdateTime;
    const shouldAddNewPoint = timeSinceLastUpdate >= this.trafficUpdateInterval;
    
    console.log('UpdateTrafficData called:', {
      networkRequestsCount: this.networkRequests.length,
      timeSinceLastUpdate,
      shouldAddNewPoint,
      currentDataPoints: this.trafficData.length
    });
    
    if (!shouldAddNewPoint && this.trafficData.length > 0) {
      // Not enough time has passed, don't update
      return;
    }
    
    // Calculate actual per-second throughput by tracking deltas
    let throughputMbps = 0;
    
    // Get total bytes from all active connections
    let currentBytesIn = 0;
    let currentBytesOut = 0;
    
    this.networkRequests.forEach(req => {
      currentBytesIn += req.bytesIn;
      currentBytesOut += req.bytesOut;
    });
    
    // If we have a previous sample, calculate the delta
    if (this.lastBytesSampleTime > 0) {
      const timeDelta = (now - this.lastBytesSampleTime) / 1000; // Convert to seconds
      const bytesInDelta = Math.max(0, currentBytesIn - this.lastBytesIn);
      const bytesOutDelta = Math.max(0, currentBytesOut - this.lastBytesOut);
      
      // Calculate bytes per second for this interval
      const bytesPerSecond = (bytesInDelta + bytesOutDelta) / timeDelta;
      
      // Convert to Mbps (1 Mbps = 125000 bytes/second)
      throughputMbps = bytesPerSecond / 125000;
      
      console.log('Throughput calculation:', {
        timeDelta,
        bytesInDelta,
        bytesOutDelta,
        bytesPerSecond,
        throughputMbps
      });
    }
    
    // Update last sample values
    this.lastBytesIn = currentBytesIn;
    this.lastBytesOut = currentBytesOut;
    this.lastBytesSampleTime = now;
    
    if (this.trafficData.length === 0) {
      // Initialize if empty
      this.initializeTrafficData();
    } else {
      // Add new data point and remove oldest if we have 60 points
      const newDataPoint = {
        x: new Date(now).toISOString(),
        y: Math.round(throughputMbps * 10) / 10 // Round to 1 decimal place
      };
      
      // Create new array with existing data plus new point
      const newTrafficData = [...this.trafficData, newDataPoint];
      
      // Keep only the last 60 points
      if (newTrafficData.length > 60) {
        newTrafficData.shift(); // Remove oldest point
      }
      
      this.trafficData = newTrafficData;
      this.lastTrafficUpdateTime = now;
      
      console.log('Added new traffic data point:', {
        timestamp: newDataPoint.x,
        throughputMbps: newDataPoint.y,
        totalPoints: this.trafficData.length
      });
    }
  }
  
  private startTrafficUpdateTimer() {
    this.stopTrafficUpdateTimer(); // Clear any existing timer
    this.trafficUpdateTimer = setInterval(() => {
      this.updateTrafficData();
    }, 1000); // Check every second, but only update when interval has passed
  }
  
  private stopTrafficUpdateTimer() {
    if (this.trafficUpdateTimer) {
      clearInterval(this.trafficUpdateTimer);
      this.trafficUpdateTimer = null;
    }
  }
  
  private handleTimeRangeChange(range: '1m' | '5m' | '15m' | '1h' | '24h') {
    this.selectedTimeRange = range;
    // Reinitialize traffic data for new time range
    this.initializeTrafficData();
    this.updateNetworkData();
  }
}