import React, { useState } from 'react';
import HorizontalBarChart from '../Charts/HorizontalBarChart';
import LineChart from '../Charts/LineChart';
import { useProjects } from '../../hooks/useProjects';
import {
  useDashboard_Data,
  useDashboardProjectsCardData,
  useDashboardTeamsCardData,
  useDashboardTasksCardData,
} from "../../hooks/useDashboard_Data";

const Dashboard = () => {
  const { projects,loading } = useProjects();
  const [selectedProjectId, setSelectedProjectId] = useState('all');
  const [range, setRange] = useState('1W');

  const getDaysFromRange = (range) => {
    switch (range) {
      case '1D': return 1;
      case '1W': return 7;
      case '15D': return 15;
      case '1M': return 30;
      case '3M': return 90;
      case '1Y': return 365;
      case '5Y': return 1825;
      default: return 7;
    }
  };

  const days = getDaysFromRange(range);
  const today = new Date();
  const FromDate = today.toISOString().split('T')[0]; // Always today

  const { projectsCardData } = useDashboardProjectsCardData();
  const { teamsCardData } = useDashboardTeamsCardData();
  const { tasksCardData } = useDashboardTasksCardData();

  const { dashboard_data, loading: isLineChartLoading } = useDashboard_Data({
    days,
    FromDate,
    projectId: selectedProjectId === 'all' ? 0 : selectedProjectId,
  });

  // Sort dashboard_data by date ascending
  const sortedDashboardData = [...dashboard_data].sort((a, b) => new Date(a.date) - new Date(b.date));

  // Bar chart logic
  const projectNames = projects?.map(p => p.name) || [];
  const projectProgress = projects?.map(p => {
    const completed = p.completedWork || 0;
    const planned = p.plannedWork || 1;
    const percent = (completed / planned) * 100;
    return Math.min(Math.round(percent), 100);
  }) || [];

  // Line chart data
  const lineChartSeries = [
    {
      name: 'Planned Work',
      data: sortedDashboardData.map(d => d.plannedTask || 0),
    },
    {
      name: 'Completed Work',
      data: sortedDashboardData.map(d => d.completedTask || 0),
    },
  ];

  const lineChartCategories = sortedDashboardData.map(d =>
    new Date(d.date).toLocaleDateString('en-US', { month: 'short', day: 'numeric' })
  );

  return (
    <div className="container-xxl flex-grow-1 container-p-y">
      <div className="row gy-4">

        {/* Projects Card */}
        <div className="col-sm-6 col-lg-4">
          <div className="card p-3 h-100 text-center d-flex justify-content-between">
            <div className="d-flex justify-content-start align-items-center mb-3">
              <h5 className="fw-bold mb-0 ms-2"><i className="rounded-circle bx bx-building-house"></i> Projects</h5>
            </div>
            <div className="d-flex justify-content-around align-items-start mt-n2">
              <div>
                <h4 className="mb-0 fw-bold">{projectsCardData.totalProjects?.toLocaleString()}</h4>
                <small className="text-muted">Total</small>
              </div>
              <div>
                <h4 className="mb-0 fw-bold">{projectsCardData.ongoingProjects?.toLocaleString()}</h4>
                <small className="text-muted">Ongoing</small>
              </div>
            </div>
          </div>
        </div>

        {/* Teams Card */}
        <div className="col-sm-6 col-lg-4">
          <div className="card p-3 h-100 text-center d-flex justify-content-between">
            <div className="d-flex justify-content-start align-items-center mb-3">
              <h5 className="fw-bold mb-0 ms-2"><i className="bx bx-group text-warning"></i> Teams</h5>
            </div>
            <div className="d-flex justify-content-around align-items-start mt-n2">
              <div>
                <h4 className="mb-0 fw-bold">{teamsCardData.totalEmployees?.toLocaleString()}</h4>
                <small className="text-muted">Total Employees</small>
              </div>
              <div>
                <h4 className="mb-0 fw-bold">{teamsCardData.inToday?.toLocaleString()}</h4>
                <small className="text-muted">In Today</small>
              </div>
            </div>
          </div>
        </div>

        {/* Tasks Card */}
        <div className="col-sm-6 col-lg-4">
          <div className="card p-3 h-100 text-center d-flex justify-content-between">
            <div className="d-flex justify-content-start align-items-center mb-3">
              <h5 className="fw-bold mb-0 ms-2"><i className="bx bx-task text-success"></i> Tasks</h5>
            </div>
            <div className="d-flex justify-content-around align-items-start mt-n2">
              <div>
                <h4 className="mb-0 fw-bold">{tasksCardData.totalTasks?.toLocaleString()}</h4>
                <small className="text-muted">Total</small>
              </div>
              <div>
                <h4 className="mb-0 fw-bold">{tasksCardData.completedTasks?.toLocaleString()}</h4>
                <small className="text-muted">Completed</small>
              </div>
            </div>
          </div>
        </div>

        {/* Bar Chart */}
        <div className="col-xxl-6 col-lg-6">
          <div className="card h-100">
            <div className="card-header d-flex align-items-start justify-content-between">
              <div className="card-title mb-0 text-start">
                <h5 className="mb-1">Projects</h5>
                <p className="card-subtitle">Total Projects Overview</p>
              </div>
            </div>
            <div className="card-body">
              <HorizontalBarChart
                categories={projectNames}
                seriesData={projectProgress}
                loading={loading}
              />
            </div>
          </div>
        </div>

        {/* Line Chart */}
        <div className="col-xxl-6 col-lg-6">
          <div className="card h-100">
            <div className="card-header">
              {/* Row 1: Title + Project Selector */}
              <div className="d-flex flex-wrap justify-content-between align-items-center mb-2">
                <div className="card-title mb-0 text-start">
                  <h5 className="mb-1">Project Progress</h5>
                  <p className="card-subtitle">Progress Overview by Project</p>
                </div>

                <div className="btn-group">
                  <button type="button" className="btn btn-label-primary btn-sm">
                    {selectedProjectId === 'all'
                      ? 'All Projects'
                      : projects?.find(p => p.id === selectedProjectId)?.name || 'Select Project'}
                  </button>
                  <button
                    type="button"
                    className="btn btn-label-primary dropdown-toggle dropdown-toggle-split"
                    data-bs-toggle="dropdown"
                    aria-expanded="false"
                  >
                    <span className="visually-hidden">Toggle Dropdown</span>
                  </button>
                  <ul className="dropdown-menu">
                    <li>
                      <button className="dropdown-item" onClick={() => setSelectedProjectId('all')}>
                        All Projects
                      </button>
                    </li>
                    {projects?.map((project) => (
                      <li key={project.id}>
                        <button className="dropdown-item" onClick={() => setSelectedProjectId(project.id)}>
                          {project.name}
                        </button>
                      </li>
                    ))}
                  </ul>
                </div>
              </div>

              {/* Row 2: Time Range Buttons */}
              <div className="d-flex flex-wrap gap-2 mt-2">
                {['1D', '1W', '15D', '1M', '3M', '1Y', '5Y'].map((key) => (
                  <button
                    key={key}
                    className={`border-0 bg-transparent px-2 py-1 text-sm rounded ${range === key ? 'fw-bold border-bottom border-primary text-primary' : 'text-muted'
                      }`}
                    style={{ cursor: 'pointer', transition: 'all 0.2s ease' }}
                    onClick={() => setRange(key)}
                  >
                    {key}
                  </button>
                ))}
              </div>
            </div>
            <div className="card-body ">
              <LineChart seriesData={lineChartSeries} categories={lineChartCategories} loading={isLineChartLoading} />
            </div>
          </div>
        </div>

      </div>
    </div>
  );
};

export default Dashboard;