"use client";

import Link from "next/link";
import { Avatar, AvatarFallback, AvatarImage } from "@/components/ui/avatar";
import { Progress } from "@/components/ui/progress";
import { cn, getInitials, formatRelativeDate } from "@/lib/utils";
import { Film, Layers, CheckCircle2, Clock, ArrowUpRight } from "lucide-react";

interface ProjectCardProps {
  project: {
    id: string;
    name: string;
    code: string;
    status: string;
    description?: string | null;
    /** The column is `dueDate`; `deadline` is kept for older callers. */
    dueDate?: Date | string | null;
    deadline?: Date | string | null;
    createdAt: Date;
    client?: { company: string } | null;
    producer?: { name: string | null; image: string | null } | null;
    _count?: { shots: number };
    shotStats?: {
      total: number;
      approved: number;
      inProgress: number;
    };
    /** Still chosen from the project's own shots (lib/project-poster.ts). */
    poster?: { url: string; shotCode: string; isKeyShot: boolean } | null;
  };
}

const STATUS_STYLES: Record<string, string> = {
  ACTIVE: "bg-green-900/70 text-green-300",
  ON_HOLD: "bg-yellow-900/70 text-yellow-300",
  COMPLETED: "bg-blue-900/70 text-blue-300",
  ARCHIVED: "bg-zinc-900/80 text-zinc-400",
};

/**
 * A project card is scanned, not read: in a grid of twenty the frame is what
 * the eye picks out, so the still leads and the title sits on it. Every card is
 * the same height whatever it holds — a ragged grid reads as broken, and the
 * description is the only part that varies, so it is given fixed room rather
 * than allowed to push the rest around.
 */
export function ProjectCard({ project }: ProjectCardProps) {
  const total = project.shotStats?.total ?? project._count?.shots ?? 0;
  const approved = project.shotStats?.approved ?? 0;
  const progress = total > 0 ? Math.round((approved / total) * 100) : 0;
  const due = project.dueDate ?? project.deadline;
  const isArchived = project.status === "ARCHIVED";

  return (
    <Link
      href={`/projects/${project.id}`}
      className="group flex h-full flex-col overflow-hidden rounded-lg border border-zinc-800 bg-card transition-colors hover:border-zinc-600 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-amber-500"
    >
      {/* Poster */}
      <div className="relative aspect-video w-full shrink-0 overflow-hidden bg-zinc-900">
        {project.poster ? (
          <img
            src={project.poster.url}
            alt=""
            loading="lazy"
            className={cn(
              "h-full w-full object-cover transition-transform duration-500 group-hover:scale-[1.04]",
              // An archived show is still recognisable, just visibly past.
              isArchived && "opacity-50 grayscale"
            )}
          />
        ) : (
          // Same footprint as a real poster, so a project without stills does
          // not leave a hole in the grid.
          <div className="flex h-full w-full items-center justify-center bg-gradient-to-br from-zinc-900 to-zinc-950">
            <Film className="h-8 w-8 text-zinc-700" />
          </div>
        )}

        {/* Scrim: the title has to hold on a bright frame as well as a dark one. */}
        <div className="absolute inset-0 bg-gradient-to-t from-black/90 via-black/35 to-black/10" />

        <span
          className={cn(
            "absolute right-2.5 top-2.5 rounded-full px-2 py-0.5 text-[11px] font-medium backdrop-blur-sm",
            STATUS_STYLES[project.status] ?? STATUS_STYLES.ACTIVE
          )}
        >
          {project.status.replace("_", " ")}
        </span>

        <div className="absolute inset-x-0 bottom-0 p-3">
          <div className="flex items-center gap-2 text-[11px] text-zinc-300/90">
            <span className="font-mono">{project.code}</span>
            {project.client && (
              <span className="truncate text-zinc-400">• {project.client.company}</span>
            )}
          </div>
          <h3 className="mt-0.5 line-clamp-2 text-base font-semibold leading-tight text-white drop-shadow-sm">
            {project.name}
          </h3>
        </div>
      </div>

      {/* Body — fixed room so every card lands the same height */}
      <div className="flex flex-1 flex-col gap-3 p-3">
        <p className="line-clamp-2 min-h-[2.5rem] text-xs text-zinc-400">
          {project.description || <span className="text-zinc-600">No description</span>}
        </p>

        <div className="space-y-1.5">
          <div className="flex items-center justify-between text-xs text-muted-foreground">
            <span>Shot progress</span>
            <span className="font-medium text-foreground tabular-nums">
              {total > 0 ? `${approved}/${total} approved` : "No shots yet"}
            </span>
          </div>
          <Progress value={progress} className="h-1.5" />
        </div>

        <div className="grid grid-cols-3 gap-2 text-xs">
          <div className="flex flex-col items-center rounded-lg bg-zinc-800 py-2">
            <Layers className="mb-1 h-3.5 w-3.5 text-zinc-400" />
            <span className="font-semibold tabular-nums text-white">{total}</span>
            <span className="text-zinc-400">shots</span>
          </div>
          <div className="flex flex-col items-center rounded-lg bg-zinc-800 py-2">
            <CheckCircle2 className="mb-1 h-3.5 w-3.5 text-green-400" />
            <span className="font-semibold tabular-nums text-white">{approved}</span>
            <span className="text-zinc-400">done</span>
          </div>
          <div className="flex flex-col items-center rounded-lg bg-zinc-800 py-2">
            <Film className="mb-1 h-3.5 w-3.5 text-blue-400" />
            <span className="font-semibold tabular-nums text-white">
              {project.shotStats?.inProgress ?? 0}
            </span>
            <span className="text-zinc-400">active</span>
          </div>
        </div>

        {/* Pinned to the bottom so the footers line up across the row. */}
        <div className="mt-auto flex items-center justify-between gap-2 border-t border-zinc-800 pt-2.5 text-xs text-zinc-400">
          <div className="flex min-w-0 items-center gap-2">
            {project.producer ? (
              <>
                <Avatar className="h-5 w-5 shrink-0">
                  {project.producer.image && <AvatarImage src={project.producer.image} />}
                  <AvatarFallback className="text-[9px]">
                    {getInitials(project.producer.name)}
                  </AvatarFallback>
                </Avatar>
                <span className="truncate">{project.producer.name ?? "Producer"}</span>
              </>
            ) : (
              <>
                <Clock className="h-3 w-3 shrink-0" />
                <span className="truncate">{formatRelativeDate(project.createdAt)}</span>
              </>
            )}
          </div>

          {due ? (
            <span className="shrink-0 text-amber-400">Due {formatRelativeDate(due as Date)}</span>
          ) : (
            <ArrowUpRight className="h-3.5 w-3.5 shrink-0 text-zinc-600 transition-colors group-hover:text-amber-400" />
          )}
        </div>
      </div>
    </Link>
  );
}