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"use client";
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import { getAllActiveProjectsTimelineApi } from "@/app/utils/api/projectApi";
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import { Card } from "ikoncomponents";
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import { useEffect, useMemo, useState } from "react";
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import {
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ResponsiveContainer,
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CartesianGrid,
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XAxis,
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YAxis,
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Tooltip,
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BarChart,
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Bar,
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Cell,
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ReferenceLine,
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} from "recharts";
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const months = [
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"Jan", "Feb", "Mar", "Apr", "May", "Jun",
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"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
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];
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const colors = [
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"#62D6B0",
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"#7C6AE6",
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"#F09B7E",
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"#4DA3FF",
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"#FFB84D",
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"#FF6B81",
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];
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export default function ProjectTimelineChart() {
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const [projects, setProjects] = useState<any[]>([]);
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useEffect(() => {
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const fetchTimelineData = async () => {
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try {
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const response = await getAllActiveProjectsTimelineApi();
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const formattedProjects = response.map((project: any, index: number) => ({
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...project,
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color: colors[index % colors.length],
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}));
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setProjects(formattedProjects);
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} catch (error) {
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console.error("Error fetching timeline data:", error);
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}
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};
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fetchTimelineData();
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}, []);
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// 1. Process your raw api dates into startOffsets and visual durations
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const chartData = useMemo(() => {
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return projects.map((project) => {
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const startDate = new Date(project.startDate);
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const endDate = new Date(project.endDate);
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const startMonth = startDate.getMonth();
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const endMonth = endDate.getMonth();
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// Calculate continuous month count width span
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const duration = Math.max(1, endMonth - startMonth + 1);
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return {
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projectName: project.projectName,
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startOffset: startMonth,
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duration: duration,
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color: project.color,
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rawStartDate: project.startDate,
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rawEndDate: project.endDate,
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};
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});
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}, [projects]);
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// 2. Dynamic Year calculations pulled safely from the project timeline data
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const currentYear = useMemo(() => {
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if (projects.length === 0) return new Date().getFullYear();
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return new Date(projects[0].startDate).getFullYear();
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}, [projects]);
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const currentMonth = new Date().getMonth();
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// Custom tooltips configuration mapping to raw date text strings
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const CustomTooltip = ({ active, payload }: any) => {
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if (active && payload && payload.length) {
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const data = payload[0].payload;
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return (
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<div className="bg-background border border-border p-3 rounded-xl shadow-md text-xs">
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<p className="font-bold mb-1 text-foreground">{data.projectName}</p>
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<p className="text-muted-foreground">
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{data.rawStartDate} → {data.rawEndDate}
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</p>
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</div>
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);
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}
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return null;
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};
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return (
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<Card className="w-full rounded-2xl p-4">
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{/* Chart Header & Dynamic Legends */}
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<div className="mb-6 flex flex-col sm:flex-row sm:items-center sm:justify-between gap-4">
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<h2 className="text-xl font-semibold">
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Project Timeline — {currentYear}
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</h2>
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<div className="flex flex-wrap items-center gap-4 text-sm text-muted-foreground">
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{projects.map((project) => (
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<div
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key={project.projectIdentifier}
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className="flex items-center gap-2"
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>
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<div
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className="h-3 w-3 rounded-sm"
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style={{ backgroundColor: project.color }}
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/>
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<span className="text-foreground">{project.projectName}</span>
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</div>
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))}
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<div className="flex items-center gap-2">
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<div className="h-4 w-0.5 bg-red-500" />
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<span className="text-foreground">Today</span>
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</div>
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</div>
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</div>
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{/* Chart Canvas Wrap */}
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<div className="h-80">
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<ResponsiveContainer width="100%" height="100%">
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<BarChart
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data={chartData}
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layout="vertical"
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stackOffset="none"
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margin={{ top: 5, right: 10, left: -10, bottom: 5 }}
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barCategoryGap="30%"
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>
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<CartesianGrid
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stroke="#E5E7EB"
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vertical={true}
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horizontal={true}
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/>
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<XAxis
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type="number"
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domain={[0, 11]}
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ticks={[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]}
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tickFormatter={(value) => months[value]}
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tickLine={false}
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axisLine={false}
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orientation="top"
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className="text-xs font-medium text-muted-foreground"
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/>
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<YAxis
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type="category"
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dataKey="projectName"
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tickLine={false}
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axisLine={false}
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width={120}
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className="text-sm font-semibold text-foreground"
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/>
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<Tooltip content={<CustomTooltip />} />
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{/* "Today" Reference Line indicator */}
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<ReferenceLine
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x={currentMonth}
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stroke="red"
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strokeDasharray="5 5"
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strokeWidth={1.5}
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/>
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{/* Invisible offset pushing real data blocks forward to match target calendar periods */}
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<Bar
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dataKey="startOffset"
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stackId="timeline"
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fill="transparent"
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legendType="none"
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/>
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{/* Rendered Colored Blocks */}
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<Bar dataKey="duration" stackId="timeline" radius={6}>
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{chartData.map((entry, index) => (
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<Cell key={`cell-${index}`} fill={entry.color} />
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))}
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</Bar>
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</BarChart>
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</ResponsiveContainer>
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</div>
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</Card>
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);
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}
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