import { Component, OnInit, inject } from '@angular/core';
import { CommonModule } from '@angular/common';
import { MatCardModule } from '@angular/material/card';
import { Location } from '@angular/common';
import { NgApexchartsModule } from 'ng-apexcharts';
import { ChartService } from './chart.service';
import { MatPaginatorModule } from '@angular/material/paginator';
import { PageEvent } from '@angular/material/paginator';
import { MatSlideToggleModule } from '@angular/material/slide-toggle';

@Component({
  selector: 'app-analysispage',
  standalone: true,
  imports: [CommonModule, MatSlideToggleModule, MatCardModule, MatPaginatorModule, NgApexchartsModule],
  templateUrl: './analysispage.html',
  styleUrls: ['./analysispage.scss']
})
export class Analysispage implements OnInit {

  originalOrder = (): number => 0;
  private location = inject(Location);
  result: any;
  pageIndex = 0;
  pageSize = 5;
  sort: {
    key: 'combined_overall_score' | 'overall_ta_score' | 'overall_fa_score' | 'news_overall_score',
    direction: 'asc' | 'desc'
  } = {
      key: 'combined_overall_score',
      direction: 'desc'
    };


  closeAreaOptions: any;
  candlestickChartOptions: any;
  overallChart: any;
  strategyChart: any;
  strategyChartIndex: number = 0;
  predictedChart: any;
  highLowChartOptions: any;
  selectedIndicator: any = 'RSI';
  selectedStrategy: any = 'RSI 14';
  activeCompany: number = 0;
  isCandlestick = true;
  constructor(private chartService: ChartService) { }

  ngOnInit(): void {
    const s = this.location.getState() as { result?: unknown } | null;
    this.result = s?.result ?? null;
    const validData = this.result.filter((item: any) => !item.error);
    const invalidData = this.result.filter((item: any) => item.error);
    validData.sort((a: any, b: any) => b.combined_overall_score - a.combined_overall_score);
    this.result = [...validData, ...invalidData];
    console.log('Analysis result:', this.result);
    this.loadCharts();
    this.loadPredictedCharts();
    this.loadStrategiesChart('RSI 14');
  }

  // Map a row to the numeric value for a given sort key
  private sortValue(row: any, key: typeof this.sort.key): number {
    switch (key) {
      case 'combined_overall_score': return Number(row?.combined_overall_score ?? -Infinity);
      case 'overall_ta_score': return Number(row?.overall_ta_score ?? -Infinity);
      case 'overall_fa_score': return Number(row?.fundamental_analysis?.overall_fa_score ?? -Infinity);
      case 'news_overall_score': return Number(row?.news_overall_score ?? -Infinity);
    }
  }

  // Sorted list (used by the paginator slice)
  get sortedResults(): any[] {
    if (!Array.isArray(this.result)) return [];
    const arr = [...this.result];
    arr.sort((a, b) => {
      const av = this.sortValue(a, this.sort.key);
      const bv = this.sortValue(b, this.sort.key);
      return this.sort.direction === 'asc' ? av - bv : bv - av;
    });
    return arr;
  }

  // Page slice over the sorted list
  get pagedResults(): any[] {
    const start = this.pageIndex * this.pageSize;
    return this.sortedResults.slice(start, start + this.pageSize);
  }

  // Toggle sort on header click
  toggleSort(key: typeof this.sort.key) {
    if (this.sort.key === key) {
      this.sort.direction = this.sort.direction === 'asc' ? 'desc' : 'asc';
    } else {
      this.sort.key = key;
      this.sort.direction = 'desc'; // default direction on new column
    }
    this.pageIndex = 0; // reset to first page on sort change
  }

  // paginator change
  onPage(e: PageEvent) {
    this.pageIndex = e.pageIndex;
    this.pageSize = e.pageSize;
  }




  showStrategies(selectedIndicator: any) {
    this.selectedIndicator = selectedIndicator;
    const strategies = this.result[this.activeCompany][selectedIndicator];
    const firstStrategyKey = Object.keys(strategies)[0];

    if (firstStrategyKey) {
      this.selectedStrategy = firstStrategyKey;
      this.loadStrategiesChart(firstStrategyKey);
    }
  }

  loadStrategiesChart(strategyName: any) {
    this.strategyChartIndex = 0;
    this.selectedStrategy = strategyName;

    this.strategyChart = this.chartService.getChartOptions(strategyName, this.result[this.activeCompany]);
    console.log(this.strategyChart);
  }

  getClass(signal: any) {
    if (typeof signal === 'string') {
      switch (signal.toLowerCase()) {
        case 'buy':
        case 'good':
        case 'positive':
        case 'bullish':
          return 'green';
        case 'dbuy':
        case 'bad':
        case 'negative':
        case 'bearish':
          return 'red';
        case 'neutral':
        case 'none':
          return 'yellow';
        default:
          return '';
      }
    } else {
      return 'strategyvalue'
    }
  }

  loadCharts() {


    // close price chart

    const data = this.result[this.activeCompany]['ohlc_data'] as Array<{ x: string; y: [number, number, number, number] }>;

    // Optional: keep sorted and remove duplicate dates
    const closeSeries = [...data]
      .sort((a, b) => a.x.localeCompare(b.x))
      .filter((d, i, arr) => i === 0 || d.x !== arr[i - 1].x)
      .map(d => ({ x: d.x, y: d.y[3] })); // close = index 3

    this.closeAreaOptions = {
      chart: { type: 'area', height: 400, width: 1200 },
      series: [
        {
          name: 'Close',
          data: closeSeries  // [{x: '2025-08-01', y: 2350.9}, ...]
        }
      ],
      xaxis: {
        type: 'category',
        labels: { style: { colors: '#ffffff' } }
      },
      yaxis: {
        opposite: true,
        labels: { style: { colors: '#ffffff' } }
      },

      tooltip: {
        theme: 'dark'

      }
    };


    //candlestick chart


    this.candlestickChartOptions = {
      chart: { type: 'candlestick', height: 400, width: 1200 },
      series: [{ name: this.activeCompany, data }], // x can be a plain string when type='category'
      xaxis: {
        type: 'category',
        labels: { style: { colors: '#ffffff' } }
      },
      yaxis: {
        opposite: true,
        labels: { style: { colors: '#ffffff' } }
      },
      tooltip: { theme: 'dark' }
    };

  }

  loadPredictedCharts() {
    //donut chart


    this.overallChart = {
      series: [
        this.result[this.activeCompany].overall_ta_score,
        this.result[this.activeCompany].overall_fa_score,
        this.result[this.activeCompany].news_overall_score
      ],  // Three values for the donut chart
      chart: {
        type: 'donut',
        width: 500
      },
      labels: ['TA', 'FA', 'News'],  // Set the labels to show on the chart
      plotOptions: {
        pie: {
          donut: {
            size: '60%',  // Control the thickness of the donut
            labels: {
              show: true,
              name: {
                show: false
              },
              value: {
                show: true,  // Show values inside the donut chart
                fontSize: '16px', // Font size for values
                color: 'white'   // White color for the values
              },
              total: {
                show: true,
                label: 'Total', // Label at the center
                formatter: (w: any) => {
                  // Display the total value (sum of all slices)
                  return w.globals.seriesTotals.reduce((a: any, b: any) => a + b, 0) + '%';
                }
              }
            }
          }
        }
      },
      fill: {
        type: 'solid',
        colors: ['#ff5733', '#33ff57', '#ffcc00'] // Colors for TA, FA, and News
      },
      tooltip: {
        enabled: true,  // Enable tooltips for the chart
        fillSeriesColor: false,
        theme: 'dark',
        style: {
          fontSize: '14px',
          color: 'white'  // White text color for tooltips
        }
      },
      legend: {
        show: true,
        position: 'bottom',  // Position the legend at the bottom
        labels: {
          useSeriesColors: true,  // Use the series colors for legend
          colors: ['white']  // White text color for legend
        }
      }
    };





    // Predicted High/Low 15-day chart (single chart with two series)
    const highsRaw = this.result[this.activeCompany].ai_predicted_daily_high_15 ?? [];
    const lowsRaw = this.result[this.activeCompany].ai_predicted_daily_low_15 ?? [];
    const dates15 = this.result[this.activeCompany].ai_predicted_dates_15 ?? [];

    const highs = highsRaw.map((v: any) => Number(Number(v).toFixed(2)));
    const lows = lowsRaw.map((v: any) => Number(Number(v).toFixed(2)));

    if (highs.length && lows.length && dates15.length && highs.length === lows.length && highs.length === dates15.length) {
      this.highLowChartOptions = {
        chart: { type: 'line', height: 400, width: 1500, toolbar: { show: false } },
        series: [
          { name: 'Predicted High', data: highs, color: '#22C55E' }, // green
          { name: 'Predicted Low', data: lows, color: '#EF4444' }    // red
        ],
        stroke: { width: 2, curve: 'smooth' },
        markers: { size: 3 },
        xaxis: { categories: dates15, type: 'category', tickPlacement: 'on', labels: { rotate: -45, rotateAlways: true, hideOverlappingLabels: false, trim: false, minHeight: 70, style: { colors: '#ffffff', fontSize: '12px' } } },
        yaxis: {
          opposite: true,
          labels: { style: { colors: '#ffffff' } }
        },
        tooltip: {
          shared: true,
          intersect: false,
          theme: 'dark',
          y: {
            formatter: (val: number) => (val != null ? val.toFixed(2) : '')
          }
        },
        legend: {
          position: 'top',
          labels: {
            colors: '#ffffff',
            useSeriesColors: false
          }
        }
      };
    } else {
      this.highLowChartOptions = null;
    }
  }


  selectCompany(index: number) {
    this.activeCompany = index;
    this.loadCharts();
    this.loadPredictedCharts();
  }

  onModeChange(checked: boolean) {
    this.isCandlestick = checked;
    this.loadCharts();
  }

  previousChart(): void {
    if (this.strategyChartIndex > 0) {
      this.strategyChartIndex--;
    }
  }

  nextChart(): void {
    if (this.strategyChartIndex < this.strategyChart.length - 1) {
      this.strategyChartIndex++;
    }
  }

}