"use client"

import { useEffect, useState } from "react"
import { Button } from "@/components/ui/button"
import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card"
import { Trophy, Calendar, User, ArrowLeft } from "lucide-react"
import Link from "next/link"
import { BadgeList } from "@/components/profile/badge-list"
import { getApiUrl } from "@/lib/api-config"
import { Tabs, TabsContent, TabsList, TabsTrigger } from "@/components/ui/tabs"
import { UserAttendanceList } from "@/components/profile/user-attendance-list"
import { UserReviewsList } from "@/components/profile/user-reviews-list"
import { UserGroupsList } from "@/components/profile/user-groups-list"
import { Avatar, AvatarFallback, AvatarImage } from "@/components/ui/avatar"
import { notFound } from "next/navigation"

interface UserProfile {
    id: number
    email: string
    username: string | null
    bio: string | null
    created_at: string
}

interface UserBadge {
    id: number
    badge: {
        id: number
        name: string
        description: string
        icon: string
        slug: string
    }
    awarded_at: string
}

export default function PublicProfilePage({ params }: { params: Promise<{ slug: string }> }) {
    const [id, setId] = useState<string | null>(null)
    const [user, setUser] = useState<UserProfile | null>(null)
    const [badges, setBadges] = useState<UserBadge[]>([])
    const [loading, setLoading] = useState(true)
    const [error, setError] = useState(false)
    const [stats, setStats] = useState({ attendance_count: 0, review_count: 0, group_count: 0 })

    useEffect(() => {
        params.then(p => setId(p.slug))
    }, [params])

    useEffect(() => {
        if (!id) return

        const fetchData = async () => {
            try {
                // Public fetch - no auth header needed strictly, but maybe good practice if protected
                const token = localStorage.getItem("token")
                const headers: Record<string, string> = token ? { Authorization: `Bearer ${token}` } : {}

                const userRes = await fetch(`${getApiUrl()}/users/${id}`, { headers })
                if (!userRes.ok) throw new Error("User not found")
                const userData = await userRes.json()
                setUser(userData)

                // Fetch Stats
                const statsRes = await fetch(`${getApiUrl()}/users/${id}/stats`, { headers })
                if (statsRes.ok) setStats(await statsRes.json())

                // Fetch Badges
                // Check if badges endpoint exists for specific user, otherwise /badges/me is for me.
                // Assuming we default to empty badges for public profile if no specific endpoint
                // Actually, let's skip badges for now or try specific endpoint if it existed.
                // Assuming no public badges endpoint yet.
                setBadges([])

            } catch (e) {
                console.error(e)
                setError(true)
            } finally {
                setLoading(false)
            }
        }
        fetchData()
    }, [id])

    if (loading) return <div className="container py-20 text-center">Loading profile...</div>
    if (error || !user) return <div className="container py-20 text-center">User not found</div>

    const displayName = user.username || user.email.split('@')[0]

    return (
        <div className="container py-10 max-w-5xl space-y-8">
            <Link href="/leaderboards">
                <Button variant="ghost" size="sm" className="mb-4">
                    <ArrowLeft className="mr-2 h-4 w-4" />
                    Back to Leaderboards
                </Button>
            </Link>

            <Card className="border-0 shadow-none bg-transparent">
                <div className="flex flex-col md:flex-row gap-8 items-start">
                    <Avatar className="h-32 w-32 border-4 border-background shadow-lg">
                        <AvatarImage src={`https://api.dicebear.com/7.x/notionists/svg?seed=${user.id}`} />
                        <AvatarFallback><User className="h-12 w-12" /></AvatarFallback>
                    </Avatar>
                    <div className="space-y-4 flex-1">
                        <div>
                            <h1 className="text-4xl font-bold tracking-tight">{displayName}</h1>
                            <p className="text-muted-foreground flex items-center gap-2 mt-2">
                                <Calendar className="h-4 w-4" />
                                Member since {new Date(user.created_at).toLocaleDateString()}
                            </p>
                        </div>
                        {user.bio && (
                            <p className="max-w-xl text-lg text-muted-foreground/80">
                                {user.bio}
                            </p>
                        )}
                        <div className="flex gap-4">
                            <div className="flex flex-col">
                                <span className="text-2xl font-bold">{stats.attendance_count}</span>
                                <span className="text-sm text-muted-foreground uppercase tracking-wider">Shows</span>
                            </div>
                            <div className="w-px bg-border h-10" />
                            <div className="flex flex-col">
                                <span className="text-2xl font-bold">{stats.review_count}</span>
                                <span className="text-sm text-muted-foreground uppercase tracking-wider">Reviews</span>
                            </div>
                            <div className="w-px bg-border h-10" />
                            <div className="flex flex-col">
                                <span className="text-2xl font-bold">{stats.group_count}</span>
                                <span className="text-sm text-muted-foreground uppercase tracking-wider">Groups</span>
                            </div>
                        </div>
                    </div>
                </div>
            </Card>

            <Tabs defaultValue="attendance" className="w-full">
                <TabsList className="grid w-full grid-cols-3 mb-8 h-12">
                    <TabsTrigger value="attendance" className="text-base">Attendance</TabsTrigger>
                    <TabsTrigger value="reviews" className="text-base">Reviews</TabsTrigger>
                    <TabsTrigger value="groups" className="text-base">Communities</TabsTrigger>
                </TabsList>

                <TabsContent value="attendance" className="space-y-6">
                    <UserAttendanceList userId={user.id} />
                </TabsContent>

                <TabsContent value="reviews" className="mt-6">
                    <UserReviewsList userId={user.id} />
                </TabsContent>

                <TabsContent value="groups" className="mt-6">
                    <UserGroupsList userId={user.id} />
                </TabsContent>
            </Tabs>
        </div>
    )
}
