Files
backspace/packages/web/src/components/chat/ExplorePage.tsx
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444 lines
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TypeScript

import React, { useEffect, useRef, useState, useCallback, useMemo } from 'react';
import { useNavigate } from 'react-router-dom';
import { useExploreStore, type TaggedExploreSpace } from '../../stores/exploreStore';
import { useSpaceStore } from '../../stores/spaceStore';
import { LoadingSpinner } from '../ui/LoadingSpinner';
import { Mascot } from '../ui/Mascot';
import { getSpaceGradient } from '../../utils/gradients';
import { extractDominantColors, colorsToGradient } from '../../utils/colorExtractor';
import { MemberListToggleButton } from '../layout/MemberListToggleButton';
export function ExplorePage() {
const navigate = useNavigate();
const setCurrentSpace = useSpaceStore((s) => s.setCurrentSpace);
const spaces = useExploreStore((s) => s.spaces);
const myRequests = useExploreStore((s) => s.myRequests);
const isLoading = useExploreStore((s) => s.isLoading);
const discoveryEnabled = useExploreStore((s) => s.discoveryEnabled);
const error = useExploreStore((s) => s.error);
const searchQuery = useExploreStore((s) => s.searchQuery);
const setSearchQuery = useExploreStore((s) => s.setSearchQuery);
const fetchSpaces = useExploreStore((s) => s.fetchSpaces);
const fetchMyRequests = useExploreStore((s) => s.fetchMyRequests);
const [joinedCollapsed, setJoinedCollapsed] = useState(false);
const debounceRef = useRef<ReturnType<typeof setTimeout> | null>(null);
// Fetch on mount
useEffect(() => {
fetchSpaces();
fetchMyRequests();
}, [fetchSpaces, fetchMyRequests]);
// Debounced search
const handleSearchChange = useCallback((value: string) => {
setSearchQuery(value);
if (debounceRef.current) clearTimeout(debounceRef.current);
debounceRef.current = setTimeout(() => {
fetchSpaces(value || undefined);
}, 300);
}, [setSearchQuery, fetchSpaces]);
useEffect(() => {
return () => {
if (debounceRef.current) clearTimeout(debounceRef.current);
};
}, []);
const handleJoinSuccess = (spaceId: string) => {
setCurrentSpace(spaceId);
navigate(`/channels/${spaceId}`);
};
const unjoinedSpaces = useMemo(
() => spaces.filter(s => !s.joined),
[spaces],
);
const joinedSpaces = useMemo(
() => spaces.filter(s => s.joined),
[spaces],
);
const hasAnySpaces = spaces.length > 0;
const hasUnjoined = unjoinedSpaces.length > 0;
const hasJoined = joinedSpaces.length > 0;
return (
<div className="flex-1 flex flex-col bg-surface-chat h-full">
{/* Header */}
<div className="h-12 px-4 flex items-center shadow-header flex-shrink-0 z-10 bg-surface-chat">
<div className="flex items-center gap-2 mr-4">
<svg width="24" height="24" viewBox="0 0 24 24" fill="currentColor" className="text-txt-tertiary">
<path d="M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm0 18c-4.41 0-8-3.59-8-8s3.59-8 8-8 8 3.59 8 8-3.59 8-8 8zm-5.5-2.5l7.51-3.49L17.5 6.5 9.99 9.99 6.5 17.5zm5.5-6.6c.61 0 1.1.49 1.1 1.1s-.49 1.1-1.1 1.1-1.1-.49-1.1-1.1.49-1.1 1.1-1.1z" />
</svg>
<span className="font-bold text-txt-primary">Explore</span>
</div>
<div className="w-[1px] h-6 bg-surface-elevated mx-2" />
<div className="relative flex-1 max-w-xs ml-2">
<input
type="text"
placeholder="Search spaces..."
value={searchQuery}
onChange={(e) => handleSearchChange(e.target.value)}
className="input-search w-full"
/>
{searchQuery && (
<button
onClick={() => handleSearchChange('')}
className="absolute right-2 top-1/2 -translate-y-1/2 text-txt-tertiary hover:text-txt-secondary"
>
<svg width="14" height="14" viewBox="0 0 24 24" fill="currentColor">
<path d="M19 6.41L17.59 5 12 10.59 6.41 5 5 6.41 10.59 12 5 17.59 6.41 19 12 13.41 17.59 19 19 17.59 13.41 12z" />
</svg>
</button>
)}
</div>
<div className="ml-auto flex items-center gap-1">
<MemberListToggleButton />
</div>
</div>
{/* Content */}
<div className="flex-1 overflow-y-auto">
{!discoveryEnabled && (
<div className="mx-6 mt-4 p-2.5 bg-accent-amber/10 border border-accent-amber/30 rounded text-[13px] text-accent-amber">
Space discovery is disabled by the instance administrator.
</div>
)}
{isLoading && spaces.length === 0 ? (
<div className="flex-1 flex items-center justify-center h-64">
<LoadingSpinner />
</div>
) : error ? (
<div className="mx-6 mt-4 p-3 bg-accent-rose/10 border border-accent-rose/30 rounded text-sm text-txt-danger">
{error}
</div>
) : !hasAnySpaces ? (
/* True empty state — no discoverable spaces at all */
<div className="flex flex-col items-center justify-center h-64 opacity-80">
<Mascot state="lonely" className="w-32 h-32 mb-3" />
<p className="text-txt-tertiary text-sm">
{searchQuery
? 'No spaces match your search.'
: 'No discoverable spaces yet.'}
</p>
</div>
) : (
<div className="p-6 space-y-6">
{/* All-joined success banner (only when no unjoined spaces remain) */}
{!hasUnjoined && hasJoined && !searchQuery && (
<div className="flex items-center gap-2.5 px-4 py-2.5 bg-accent-mint/10 border border-accent-mint/20 rounded-lg">
<svg width="18" height="18" viewBox="0 0 24 24" fill="currentColor" className="text-accent-mint flex-shrink-0">
<path d="M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-2 15l-5-5 1.41-1.41L10 14.17l7.59-7.59L19 8l-9 9z" />
</svg>
<span className="text-[13px] text-accent-mint">
You're in all discoverable spaces
</span>
</div>
)}
{/* Unjoined spaces grid */}
{hasUnjoined && (
<div className="grid grid-cols-1 md:grid-cols-2 xl:grid-cols-3 gap-4">
{unjoinedSpaces.map((space) => (
<SpaceCard
key={`${space.id}:${space._instanceOrigin}`}
space={space}
isPending={myRequests.some(r => r.spaceId === space.id && r.status === 'pending')}
onJoinSuccess={handleJoinSuccess}
/>
))}
</div>
)}
{/* Joined spaces section */}
{hasJoined && (
<div>
<button
onClick={() => setJoinedCollapsed(!joinedCollapsed)}
className="flex items-center gap-2 mb-3 group"
>
<svg
width="12"
height="12"
viewBox="0 0 24 24"
fill="currentColor"
className={`text-txt-tertiary transition-transform ${joinedCollapsed ? '-rotate-90' : ''}`}
>
<path d="M7 10l5 5 5-5z" />
</svg>
<span className="text-xs font-semibold uppercase tracking-wider text-txt-tertiary group-hover:text-txt-secondary transition-colors">
Joined
</span>
<span className="text-xs text-txt-tertiary/60">
{joinedSpaces.length}
</span>
</button>
{!joinedCollapsed && (
<div className="grid grid-cols-1 md:grid-cols-2 xl:grid-cols-3 gap-4">
{joinedSpaces.map((space) => (
<SpaceCard
key={`${space.id}:${space._instanceOrigin}`}
space={space}
isPending={false}
onJoinSuccess={handleJoinSuccess}
/>
))}
</div>
)}
</div>
)}
</div>
)}
</div>
</div>
);
}
function SpaceCard({
space,
isPending,
onJoinSuccess,
}: {
space: TaggedExploreSpace;
isPending: boolean;
onJoinSuccess: (spaceId: string) => void;
}) {
const publicJoin = useExploreStore((s) => s.publicJoin);
const requestJoin = useExploreStore((s) => s.requestJoin);
const [joining, setJoining] = useState(false);
const [showRequestForm, setShowRequestForm] = useState(false);
const [requestMessage, setRequestMessage] = useState('');
const [requestSent, setRequestSent] = useState(isPending);
const [joinError, setJoinError] = useState('');
const [iconGradient, setIconGradient] = useState<string | null>(null);
const fallbackGradient = getSpaceGradient(space.id, space.name, space.avatarColor).gradient;
const isPublic = space.visibility === 'public';
const isJoined = space.joined === true;
const originLabel = space._instanceOrigin
? (() => { try { return new URL(space._instanceOrigin).host; } catch { return space._instanceOrigin; } })()
: null;
const iconUrl = space.icon
? (space.icon.startsWith('http') || space.icon.startsWith('/') ? space.icon : `/api/uploads/${space.icon}`)
: null;
const bannerUrl = space.banner
? (space.banner.startsWith('http') || space.banner.startsWith('/') ? space.banner : `/api/uploads/${space.banner}`)
: null;
// Extract dominant colors from icon when no banner is set
useEffect(() => {
if (bannerUrl || !iconUrl) return;
let cancelled = false;
extractDominantColors(iconUrl)
.then(colors => {
if (!cancelled && colors.length > 0) setIconGradient(colorsToGradient(colors));
})
.catch(() => {});
return () => { cancelled = true; };
}, [iconUrl, bannerUrl]);
const handlePublicJoin = async () => {
setJoining(true);
setJoinError('');
try {
const fullSpace = await publicJoin(space);
onJoinSuccess(fullSpace.id);
} catch (err) {
setJoinError(err instanceof Error ? err.message : 'Failed to join');
setJoining(false);
}
};
const handleRequestJoin = async () => {
setJoining(true);
setJoinError('');
try {
await requestJoin(space, requestMessage.trim() || undefined);
setRequestSent(true);
setShowRequestForm(false);
} catch (err) {
setJoinError(err instanceof Error ? err.message : 'Failed to send request');
} finally {
setJoining(false);
}
};
const handleViewSpace = () => {
onJoinSuccess(space.id);
};
return (
<div className={`bg-surface-channel rounded-lg border overflow-hidden flex flex-col transition-colors ${
isJoined
? 'border-accent-mint/20 hover:border-accent-mint/40'
: 'border-border-soft hover:border-border-hard'
}`}>
{/* Banner area */}
<div className="h-32 relative overflow-hidden">
{/* Background layer */}
{bannerUrl ? (
<img src={bannerUrl} alt="" className="absolute inset-0 w-full h-full object-cover" />
) : (
<div className="absolute inset-0" style={{ background: iconGradient ?? fallbackGradient }} />
)}
{/* Frosted bottom fade — Aether Drift glass */}
<div
className="absolute bottom-0 inset-x-0 h-16"
style={{ background: 'linear-gradient(to top, rgba(20,20,26,0.9), transparent)' }}
/>
{/* Joined badge (top-left) */}
{isJoined && (
<div className="absolute top-2 left-2 z-[2]">
<span className="flex items-center gap-1 px-2 py-0.5 rounded-full text-[10px] font-semibold bg-accent-mint/25 text-accent-mint backdrop-blur-sm">
<svg width="10" height="10" viewBox="0 0 24 24" fill="currentColor">
<path d="M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z" />
</svg>
Joined
</span>
</div>
)}
{/* Visibility badge */}
<div className="absolute top-2 right-2 z-[2]">
<span className={`px-2 py-0.5 rounded-full text-[10px] font-semibold uppercase tracking-wider backdrop-blur-sm ${
isPublic
? 'bg-accent-mint/20 text-accent-mint'
: 'bg-accent-amber/20 text-accent-amber'
}`}>
{isPublic ? 'Public' : 'Request'}
</span>
</div>
</div>
{/* Overlapping icon */}
<div className="relative px-4 -mt-8 z-10">
{iconUrl ? (
<img
src={iconUrl}
alt={space.name}
className="w-14 h-14 rounded-xl object-cover ring-[3px] ring-surface-channel shadow-lg"
/>
) : (
<div
className="w-14 h-14 rounded-xl ring-[3px] ring-surface-channel shadow-lg flex items-center justify-center text-xl font-bold text-white/90"
style={{ background: fallbackGradient }}
>
{space.name.charAt(0).toUpperCase()}
</div>
)}
</div>
{/* Content */}
<div className="px-4 pt-2 pb-4 flex flex-col flex-1">
<h3 className="text-[15px] font-bold text-txt-primary truncate mb-1">{space.name}</h3>
{space.description ? (
<p className="text-[13px] text-txt-secondary line-clamp-2 mb-3 flex-1">
{space.description}
</p>
) : (
<p className="text-[13px] text-txt-tertiary italic mb-3 flex-1">No description</p>
)}
<div className="flex items-center gap-3 text-[12px] text-txt-tertiary mb-3">
<span className="flex items-center gap-1">
<svg width="14" height="14" viewBox="0 0 24 24" fill="currentColor" className="opacity-60">
<path d="M16 11c1.66 0 2.99-1.34 2.99-3S17.66 5 16 5c-1.66 0-3 1.34-3 3s1.34 3 3 3zm-8 0c1.66 0 2.99-1.34 2.99-3S9.66 5 8 5C6.34 5 5 6.34 5 8s1.34 3 3 3zm0 2c-2.33 0-7 1.17-7 3.5V19h14v-2.5c0-2.33-4.67-3.5-7-3.5zm8 0c-.29 0-.62.02-.97.05 1.16.84 1.97 1.97 1.97 3.45V19h6v-2.5c0-2.33-4.67-3.5-7-3.5z" />
</svg>
{space.memberCount} {space.memberCount === 1 ? 'member' : 'members'}
</span>
{originLabel && (
<span className="flex items-center gap-1 text-txt-tertiary/70">
<svg width="12" height="12" viewBox="0 0 24 24" fill="currentColor" className="opacity-50">
<path d="M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-1 17.93c-3.95-.49-7-3.85-7-7.93 0-.62.08-1.21.21-1.79L9 15v1c0 1.1.9 2 2 2v1.93zm6.9-2.54c-.26-.81-1-1.39-1.9-1.39h-1v-3c0-.55-.45-1-1-1H8v-2h2c.55 0 1-.45 1-1V7h2c1.1 0 2-.9 2-2v-.41c2.93 1.19 5 4.06 5 7.41 0 2.08-.8 3.97-2.1 5.39z" />
</svg>
{originLabel}
</span>
)}
</div>
{/* Action area */}
{joinError && (
<div className="text-[12px] text-txt-danger mb-2">{joinError}</div>
)}
{isJoined ? (
<button
onClick={handleViewSpace}
className="w-full py-2 bg-accent-mint/15 hover:bg-accent-mint/25 text-accent-mint text-sm font-medium rounded transition-colors"
>
View Space
</button>
) : isPublic ? (
<button
onClick={handlePublicJoin}
disabled={joining}
className="w-full py-2 bg-accent-primary hover:bg-accent-primary-hover text-white text-sm font-medium rounded transition-colors disabled:opacity-50"
>
{joining ? (
<span className="flex items-center justify-center gap-2">
<LoadingSpinner />
Joining...
</span>
) : (
'Join Space'
)}
</button>
) : requestSent ? (
<button
disabled
className="w-full py-2 bg-interactive-muted text-txt-tertiary text-sm font-medium rounded cursor-default"
>
Request Pending
</button>
) : showRequestForm ? (
<div className="space-y-2">
<textarea
value={requestMessage}
onChange={(e) => setRequestMessage(e.target.value.slice(0, 200))}
placeholder="Why do you want to join? (optional)"
rows={2}
className="input-standard w-full resize-none"
/>
<div className="flex gap-2">
<button
onClick={handleRequestJoin}
disabled={joining}
className="flex-1 py-1.5 bg-accent-amber hover:bg-accent-amber/80 text-[#13131a] text-sm font-medium rounded transition-colors disabled:opacity-50"
>
{joining ? 'Sending...' : 'Send Request'}
</button>
<button
onClick={() => setShowRequestForm(false)}
className="px-3 py-1.5 text-sm text-txt-tertiary hover:text-txt-secondary transition-colors"
>
Cancel
</button>
</div>
</div>
) : (
<button
onClick={() => setShowRequestForm(true)}
className="w-full py-2 bg-accent-amber/20 hover:bg-accent-amber/30 text-accent-amber text-sm font-medium rounded transition-colors"
>
Request to Join
</button>
)}
</div>
</div>
);
}