"use client"

import { useState, useEffect } from "react"
import { Button } from "@/components/ui/button"
import {
    Dialog,
    DialogContent,
    DialogDescription,
    DialogFooter,
    DialogHeader,
    DialogTitle,
    DialogTrigger,
} from "@/components/ui/dialog"
import {
    Select,
    SelectContent,
    SelectItem,
    SelectTrigger,
    SelectValue,
} from "@/components/ui/select"
import { ListMusic, Plus, Loader2 } from "lucide-react"
import { useToast } from "@/components/ui/use-toast"
import { getApiUrl } from "@/lib/api-config"
import { Label } from "@/components/ui/label"
import { Input } from "@/components/ui/input"

interface AddToPlaylistDialogProps {
    performanceId: number
    songTitle: string
}

export function AddToPlaylistDialog({ performanceId, songTitle }: AddToPlaylistDialogProps) {
    const [open, setOpen] = useState(false)
    const [playlists, setPlaylists] = useState<any[]>([])
    const [loading, setLoading] = useState(false)
    const [submitting, setSubmitting] = useState(false)
    const [selectedPlaylistId, setSelectedPlaylistId] = useState<string>("")
    const [notes, setNotes] = useState("")
    const { toast } = useToast()

    useEffect(() => {
        if (open && playlists.length === 0) {
            setLoading(true)
            const token = localStorage.getItem("token")
            if (!token) return

            fetch(`${getApiUrl()}/playlists/mine`, {
                headers: { Authorization: `Bearer ${token}` }
            })
                .then(res => res.json())
                .then(data => setPlaylists(data))
                .catch(err => console.error(err))
                .finally(() => setLoading(false))
        }
    }, [open, playlists.length])

    const handleSubmit = async () => {
        if (!selectedPlaylistId) return

        setSubmitting(true)
        const token = localStorage.getItem("token")

        try {
            const res = await fetch(`${getApiUrl()}/playlists/${selectedPlaylistId}/performances/${performanceId}`, {
                method: "POST",
                headers: {
                    "Content-Type": "application/json",
                    Authorization: `Bearer ${token}`
                },
                body: JSON.stringify({ notes: notes || undefined })
            })

            if (res.ok) {
                toast({ title: "Added to playlist" })
                setOpen(false)
            } else if (res.status === 400) {
                toast({ title: "Already in playlist", variant: "default" })
            } else {
                throw new Error("Failed to add")
            }
        } catch (error) {
            toast({ title: "Error", description: "Could not add to playlist", variant: "destructive" })
        } finally {
            setSubmitting(false)
        }
    }

    return (
        <Dialog open={open} onOpenChange={setOpen}>
            <DialogTrigger asChild>
                <Button variant="ghost" size="icon" className="h-6 w-6 text-muted-foreground hover:text-primary" title="Add to Playlist">
                    <ListMusic className="h-4 w-4" />
                </Button>
            </DialogTrigger>
            <DialogContent className="sm:max-w-[425px]">
                <DialogHeader>
                    <DialogTitle>Add to Playlist</DialogTitle>
                    <DialogDescription>
                        Add &quot;{songTitle}&quot; to one of your collections.
                    </DialogDescription>
                </DialogHeader>

                <div className="grid gap-4 py-4">
                    <div className="space-y-2">
                        <Label htmlFor="playlist">Select Playlist</Label>
                        <Select onValueChange={setSelectedPlaylistId} value={selectedPlaylistId}>
                            <SelectTrigger>
                                <SelectValue placeholder="Select a playlist" />
                            </SelectTrigger>
                            <SelectContent>
                                {loading ? (
                                    <div className="flex items-center justify-center p-2">
                                        <Loader2 className="h-4 w-4 animate-spin text-muted-foreground" />
                                    </div>
                                ) : playlists.length === 0 ? (
                                    <div className="p-2 text-sm text-muted-foreground text-center">No playlists found</div>
                                ) : (
                                    playlists.map((p) => (
                                        <SelectItem key={p.id} value={p.id.toString()}>
                                            {p.name}
                                        </SelectItem>
                                    ))
                                )}
                            </SelectContent>
                        </Select>
                    </div>

                    <div className="space-y-2">
                        <Label htmlFor="notes">Notes (Optional)</Label>
                        <Input
                            id="notes"
                            placeholder="Why did you pick this version?"
                            value={notes}
                            onChange={(e) => setNotes(e.target.value)}
                        />
                    </div>
                </div>

                <DialogFooter>
                    <Button onClick={handleSubmit} disabled={submitting || !selectedPlaylistId}>
                        {submitting && <Loader2 className="mr-2 h-4 w-4 animate-spin" />}
                        Add to Playlist
                    </Button>
                </DialogFooter>
            </DialogContent>
        </Dialog>
    )
}