Press n or j to go to the next uncovered block, b, p or k for the previous block.
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// Copyright (C) 2026 Max Boksem. See NOTICE for additional terms under GPLv3 section 7.
import type { EpgProgram } from "@/lib/types";
import { formatHHMM, getGridMarks, toPct } from "@/lib/epg-window";
export const WINDOW_PAST = 3600; // default 1 hour before now
export const WINDOW_FUTURE = 7200; // default 2 hours after now
interface EpgTimelineBarProps {
programmes: EpgProgram[];
now: number;
windowStart?: number;
windowEnd?: number;
/** Tailwind h-* class */
height?: string;
/** Render time labels below the bar */
showLabels?: boolean;
onSelect?: (prog: EpgProgram) => void;
selected?: EpgProgram | null;
}
export const EpgTimelineBar = ({
programmes,
now,
windowStart: wStart,
windowEnd: wEnd,
height = "h-10",
showLabels = false,
onSelect,
selected,
}: EpgTimelineBarProps) => {
const windowStart = wStart ?? now - WINDOW_PAST;
const windowEnd = wEnd ?? now + WINDOW_FUTURE;
const windowTotal = windowEnd - windowStart;
const pct = (t: number) => toPct(t, windowStart, windowTotal);
const nowPct = pct(now);
const gridMarks = getGridMarks(windowStart, windowEnd);
const visible = programmes.filter((p) => p.endTime > windowStart && p.startTime < windowEnd);
return (
<div className="w-full">
{/* Bar */}
<div
className={`relative w-full rounded-md overflow-hidden border border-border/20 ${height}`}
style={{
background:
"linear-gradient(180deg, hsl(var(--secondary)/0.35) 0%, hsl(var(--secondary)/0.18) 100%)",
}}
>
{/* Program blocks — rendered first (lower z) */}
{visible.map((prog, i) => {
const left = pct(prog.startTime);
const right = pct(prog.endTime);
const width = right - left;
if (width < 0.3) return null;
const isCurrent = prog.startTime <= now && prog.endTime > now;
const isPast = prog.endTime <= now;
const isSelected =
selected != null &&
selected.startTime === prog.startTime &&
selected.channelId === prog.channelId;
// Inline gradient so we get depth even without Tailwind opacity classes
const bg = isSelected
? "linear-gradient(180deg, hsl(var(--primary)/0.72) 0%, hsl(var(--primary)/0.58) 100%)"
: isCurrent
? "linear-gradient(180deg, hsl(var(--primary)/0.50) 0%, hsl(var(--primary)/0.36) 100%)"
: isPast
? "linear-gradient(180deg, hsl(var(--muted-foreground)/0.15) 0%, hsl(var(--muted-foreground)/0.08) 100%)"
: "linear-gradient(180deg, hsl(var(--primary)/0.20) 0%, hsl(var(--primary)/0.12) 100%)";
const hoverBg = isSelected
? "hsl(var(--primary)/0.80)"
: isCurrent
? "hsl(var(--primary)/0.56)"
: isPast
? "hsl(var(--muted-foreground)/0.22)"
: "hsl(var(--primary)/0.28)";
return (
<div
key={`${prog.channelId}-${prog.startTime}-${i}`}
role={onSelect ? "button" : undefined}
tabIndex={onSelect ? 0 : undefined}
onClick={
onSelect
? (e) => {
e.stopPropagation();
onSelect(prog);
}
: undefined
}
onKeyDown={
onSelect
? (e) => {
if (e.key === "Enter" || e.key === " ") {
e.preventDefault();
e.stopPropagation();
onSelect(prog);
}
}
: undefined
}
title={prog.title}
className={[
"absolute top-0 bottom-0 border-r border-white/8 z-1 overflow-hidden",
"before:absolute before:inset-x-0 before:top-0 before:h-px before:bg-white/18 before:pointer-events-none",
onSelect
? "cursor-pointer transition-all duration-100"
: "cursor-default",
].join(" ")}
style={{
left: `${left.toFixed(3)}%`,
width: `${width.toFixed(3)}%`,
background: bg,
}}
onMouseEnter={
onSelect
? (e) => {
(e.currentTarget as HTMLDivElement).style.background =
hoverBg;
}
: undefined
}
onMouseLeave={
onSelect
? (e) => {
(e.currentTarget as HTMLDivElement).style.background =
bg;
}
: undefined
}
>
{width > 5 && (
<span
className={`absolute inset-x-1.5 top-1/2 -translate-y-1/2 truncate pointer-events-none leading-tight text-[9px] font-medium ${
isCurrent || isSelected
? "text-foreground/90"
: isPast
? "text-foreground/40"
: "text-foreground/60"
}`}
>
{prog.title}
</span>
)}
</div>
);
})}
{/* Gridlines ON TOP of program blocks at low opacity so they're visible through blocks */}
{gridMarks.map((t) => (
<div
key={t}
className={`absolute top-0 bottom-0 w-px pointer-events-none z-2 ${
t % 3600 === 0 ? "bg-white/18" : "bg-white/8"
}`}
style={{ left: `${pct(t).toFixed(3)}%` }}
/>
))}
{/* "Now" marker — on top of everything */}
<div
className="absolute top-0 bottom-0 w-0.5 bg-red-400/85 z-3 pointer-events-none"
style={{ left: `${nowPct.toFixed(3)}%` }}
/>
</div>
{/* Time labels below bar */}
{showLabels && (
<div className="relative w-full h-4 mt-0.5">
{gridMarks.map((t) => {
const p = pct(t);
if (p < 3 || p > 97) return null;
return (
<span
key={t}
className={`absolute -translate-x-1/2 whitespace-nowrap tabular-nums select-none ${
t % 3600 === 0
? "text-[9px] text-muted-foreground/65 font-medium"
: "text-[8px] text-muted-foreground/40"
}`}
style={{ left: `${p.toFixed(3)}%` }}
>
{formatHHMM(t)}
</span>
);
})}
</div>
)}
</div>
);
};
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