"use client";

import { useState, useTransition } from "react";
import { YoutubeVideo, DetectedObject, MarketplaceMatch } from "@/lib/db/schema";
import { Button } from "@/components/ui/button";
import { Card, CardContent, CardHeader, CardTitle, CardFooter, CardDescription } from "@/components/ui/card";
import { Badge } from "@/components/ui/badge";
import { Tabs, TabsContent, TabsList, TabsTrigger } from "@/components/ui/tabs";
import {
    Play,
    Plus,
    CheckCircle2,
    XCircle,
    ArrowLeft,
    ChevronRight,
    Copy,
    ExternalLink,
    Video,
    Package,
    History,
    Save
} from "lucide-react";
import Link from "next/link";
import { CrossVaultSuggestions } from "./cross-vault-suggestions";
import { VideoEmbed } from "@/features/vault/components/video-embed";
import { AnalysisHistory } from "./analysis-history";
import {
    triggerAIAnalysisAction,
    approveDetectionAction,
    rejectDetectionAction,
    completeVideoReviewAction,
    addManualProductAction
} from "../actions/analysis";
import { toast } from "sonner";
import { Input } from "@/components/ui/input";
import { Label } from "@/components/ui/label";
import {
    Dialog,
    DialogContent,
    DialogHeader,
    DialogTitle,
    DialogTrigger,
    DialogFooter
} from "@/components/ui/dialog";

type ExtendedVideo = YoutubeVideo & {
    channel?: { channelName: string };
    detections: (DetectedObject & { marketplaceMatches: MarketplaceMatch[] })[];
};

export function AnalysisInterface({ video }: { video: ExtendedVideo }) {
    const [isPending, startTransition] = useTransition();
    const [activeTab, setActiveTab] = useState("review");
    const [isAddProductOpen, setIsAddProductOpen] = useState(false);

    const handleTriggerAI = async () => {
        startTransition(async () => {
            const result = await triggerAIAnalysisAction(video.id);
            if (result.success) {
                toast.success("AI Analysis triggered");
            } else {
                toast.error("Failed to trigger analysis");
            }
        });
    };

    const handleApprove = async (id: string) => {
        startTransition(async () => {
            await approveDetectionAction(id);
            toast.success("Product approved");
        });
    };

    const handleReject = async (id: string) => {
        startTransition(async () => {
            await rejectDetectionAction(id);
            toast.success("Product rejected");
        });
    };

    const handleComplete = async () => {
        startTransition(async () => {
            await completeVideoReviewAction(video.id);
            toast.success("Video review completed");
        });
    };

    return (
        <div className="space-y-6">
            <div className="flex items-center justify-between">
                <div className="flex flex-col gap-1">
                    <div className="flex items-center gap-2 text-xs text-muted-foreground mb-1">
                        <Link href="/admin/dashboard" className="hover:text-primary transition-colors">Dashboard</Link>
                        <span>/</span>
                        <Link href="/admin/analysis-queue" className="hover:text-primary transition-colors">Video Hub</Link>
                    </div>
                    <div className="flex items-center gap-4">
                        <Button variant="ghost" size="icon" className="h-8 w-8" asChild>
                            <Link href="/admin/analysis-queue">
                                <ArrowLeft className="h-4 w-4" />
                            </Link>
                        </Button>
                        <div>
                            <h1 className="text-2xl font-bold line-clamp-1">{video.title}</h1>
                            <p className="text-sm text-muted-foreground">{video.channel?.channelName}</p>
                        </div>
                    </div>
                </div>
                <div className="flex items-center gap-2">
                    <Button
                        variant="secondary"
                        onClick={handleTriggerAI}
                        disabled={isPending || video.scanStatus === 'in_progress'}
                    >
                        <Play className="mr-2 h-4 w-4" />
                        {video.scanStatus === 'pending_analysis' ? 'Run AI Analysis' : 'Re-Run AI'}
                    </Button>
                    <Button
                        variant="default"
                        className="bg-emerald-600 hover:bg-emerald-700"
                        onClick={handleComplete}
                        disabled={isPending}
                    >
                        <CheckCircle2 className="mr-2 h-4 w-4" />
                        Mark as Done
                    </Button>
                </div>
            </div>

            <div className="grid grid-cols-1 lg:grid-cols-3 gap-8">
                {/* Left Side: Video Player & Overview */}
                <div className="lg:col-span-2 space-y-6">
                    <VideoEmbed
                        videoId={video.videoId}
                        title={video.title}
                        platform={video.platform as any}
                        url={video.url}
                        width={video.width}
                        height={video.height}
                    />

                    <Tabs value={activeTab} onValueChange={setActiveTab}>
                        <TabsList className="grid w-full grid-cols-3">
                            <TabsTrigger value="review">Review Objects</TabsTrigger>
                            <TabsTrigger value="suggestions">Cross-Vault suggestions</TabsTrigger>
                            <TabsTrigger value="history">History</TabsTrigger>
                        </TabsList>

                        <TabsContent value="review" className="space-y-4 pt-4">
                            <div className="flex items-center justify-between">
                                <h3 className="text-lg font-semibold">Detected Objects ({video.detections.length})</h3>
                                <Dialog open={isAddProductOpen} onOpenChange={setIsAddProductOpen}>
                                    <DialogTrigger asChild>
                                        <Button size="sm">
                                            <Plus className="h-4 w-4 mr-2" />
                                            Add Manual Product
                                        </Button>
                                    </DialogTrigger>
                                    <AddProductDialog
                                        videoId={video.id}
                                        onSuccess={() => setIsAddProductOpen(false)}
                                    />
                                </Dialog>
                            </div>

                            <div className="grid gap-4">
                                {video.detections.map((obj) => (
                                    <Card key={obj.id} className="bg-card/40 backdrop-blur-md border-border/40">
                                        <div className="p-4 flex gap-4">
                                            <div className="w-24 h-24 bg-muted rounded-md overflow-hidden flex-shrink-0">
                                                {obj.thumbnailUrl ? (
                                                    <img src={obj.thumbnailUrl} className="w-full h-full object-cover" />
                                                ) : (
                                                    <Package className="w-full h-full p-6 text-muted-foreground opacity-20" />
                                                )}
                                            </div>
                                            <div className="flex-1 flex flex-col gap-1">
                                                <div className="flex items-center justify-between">
                                                    <h4 className="font-semibold">{obj.objectName}</h4>
                                                    <Badge variant={obj.moderationStatus === 'APPROVED' ? 'default' : obj.moderationStatus === 'REJECTED' ? 'destructive' : 'outline'}>
                                                        {obj.moderationStatus}
                                                    </Badge>
                                                </div>
                                                <p className="text-xs text-muted-foreground">Category: {obj.category}</p>

                                                {obj.marketplaceMatches?.[0] && (
                                                    <div className="mt-2 text-sm flex items-center gap-2 text-emerald-500">
                                                        <ExternalLink className="h-3 w-3" />
                                                        <span className="line-clamp-1">{obj.marketplaceMatches[0].affiliateUrl}</span>
                                                    </div>
                                                )}

                                                <div className="mt-4 flex items-center gap-2">
                                                    <Button
                                                        size="sm"
                                                        variant="outline"
                                                        className="h-8 border-emerald-500/50 text-emerald-500 hover:bg-emerald-500/10"
                                                        onClick={() => handleApprove(obj.id)}
                                                        disabled={isPending || obj.moderationStatus === 'APPROVED'}
                                                    >
                                                        Approve
                                                    </Button>
                                                    <Button
                                                        size="sm"
                                                        variant="outline"
                                                        className="h-8 border-rose-500/50 text-rose-500 hover:bg-rose-500/10"
                                                        onClick={() => handleReject(obj.id)}
                                                        disabled={isPending || obj.moderationStatus === 'REJECTED'}
                                                    >
                                                        Reject
                                                    </Button>
                                                </div>
                                            </div>
                                        </div>
                                    </Card>
                                ))}
                            </div>
                        </TabsContent>

                        <TabsContent value="suggestions" className="pt-4">
                            <CrossVaultSuggestions videoId={video.videoId} videoInternalId={video.id} />
                        </TabsContent>

                        <TabsContent value="history" className="pt-4">
                            <AnalysisHistory videoInternalId={video.id} />
                        </TabsContent>
                    </Tabs>
                </div>

                {/* Right Side: Metadata & Status */}
                <div className="space-y-6">
                    <Card>
                        <CardHeader>
                            <CardTitle>Video Details</CardTitle>
                        </CardHeader>
                        <CardContent className="space-y-4">
                            <div className="space-y-1">
                                <Label className="text-xs text-muted-foreground">Platform</Label>
                                <p className="text-sm font-medium uppercase">{video.platform}</p>
                            </div>
                            <div className="space-y-1">
                                <Label className="text-xs text-muted-foreground">Status</Label>
                                <p className="text-sm font-medium capitalize">{video.scanStatus.replace('_', ' ')}</p>
                            </div>
                            <div className="space-y-1">
                                <Label className="text-xs text-muted-foreground">Video URL</Label>
                                <div className="flex items-center gap-2">
                                    <Input value={video.url || ''} readOnly className="h-8 text-xs" />
                                    <Button variant="ghost" size="icon" className="h-8 w-8">
                                        <ExternalLink className="h-4 w-4" />
                                    </Button>
                                </div>
                            </div>
                        </CardContent>
                    </Card>

                    <Card className="bg-primary/5 border-primary/20">
                        <CardHeader>
                            <CardTitle className="text-sm">Admin Instructions</CardTitle>
                        </CardHeader>
                        <CardContent className="text-xs space-y-2 text-muted-foreground">
                            <p>1. Run AI Analysis if not already done.</p>
                            <p>2. Approve items that are correctly identified.</p>
                            <p>3. Add any missing products manually.</p>
                            <p>4. Use the Suggestions tab to reuse products from other creators who shared this video.</p>
                            <p>5. Mark as Done to notify the creator.</p>
                        </CardContent>
                    </Card>
                </div>
            </div>
        </div>
    );
}

function AddProductDialog({ videoId, onSuccess }: { videoId: string, onSuccess: () => void }) {
    const [isPending, startTransition] = useTransition();
    const [name, setName] = useState("");
    const [category, setCategory] = useState("Apparel");
    const [url, setUrl] = useState("");

    const handleSubmit = async (e: React.FormEvent) => {
        e.preventDefault();
        startTransition(async () => {
            const result = await addManualProductAction(videoId, {
                objectName: name,
                category: category as any,
                affiliateUrl: url
            });
            if (result.success) {
                toast.success("Product added manually");
                onSuccess();
            } else {
                toast.error("Failed to add product");
            }
        });
    };

    return (
        <DialogContent>
            <form onSubmit={handleSubmit}>
                <DialogHeader>
                    <DialogTitle>Add Manual Product</DialogTitle>
                </DialogHeader>
                <div className="grid gap-4 py-4">
                    <div className="grid gap-2">
                        <Label htmlFor="name">Product Name</Label>
                        <Input id="name" value={name} onChange={e => setName(e.target.value)} placeholder="e.g. Sony WH-1000XM4" required />
                    </div>
                    <div className="grid gap-2">
                        <Label htmlFor="category">Category</Label>
                        <Input id="category" value={category} onChange={e => setCategory(e.target.value)} required />
                    </div>
                    <div className="grid gap-2">
                        <Label htmlFor="url">Affiliate/Product URL</Label>
                        <Input id="url" value={url} onChange={e => setUrl(e.target.value)} placeholder="https://amazon.com/..." />
                    </div>
                </div>
                <DialogFooter>
                    <Button type="submit" disabled={isPending}>
                        {isPending ? "Adding..." : "Add Product"}
                    </Button>
                </DialogFooter>
            </form>
        </DialogContent>
    );
}