"use client";

import type { WorkPackage } from "@/lib/work-package-types";
import { Badge } from "@/components/ui/badge";
import { Button } from "@/components/ui/button";
import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
import {
  DropdownMenu,
  DropdownMenuContent,
  DropdownMenuItem,
  DropdownMenuTrigger,
} from "@/components/ui/dropdown-menu";
import {
  CheckCircle2,
  Circle,
  LoaderCircle,
  MoreHorizontal,
  Play,
} from "lucide-react";
import {
  getWorkPackageVersion,
  getWorkPackageVisualState,
} from "@/lib/work-package-ui";

function statusLabel(status: WorkPackage["status"]) {
  if (status === "todo") return "To do";
  if (status === "in_progress") return "In progress";
  return "Done";
}

function priorityLabel(priority: WorkPackage["priority"]) {
  if (priority === "high") return "High";
  if (priority === "medium") return "Medium";
  return "Low";
}

function displayTitle(title: string) {
  return title
    .replace("Customer Requirements Specification", "Customer Requirements")
    .replace("System Requirements Specification", "System Requirements")
    .replace("Final Engineering Concept", "Engineering Concept")
    .replace("Final Concept", "Product Concept")
    .replace("Product Certification", "Certification")
    .replace("Safety of Products", "Product Safety")
    .replace("Service Ability Review", "Service Review")
    .replace("Decompose System", "System Breakdown")
    .replace("Industrial Design", "Industrial Design")
    .replace("Patent Check", "Patent Review")
    .replace("Test Management", "Test Planning");
}

export function WorkPackageCard(props: {
  wp: WorkPackage;
  activeWorkPackageId?: string;
  selected: boolean;
  onSelect: () => void;
  onPrefill: (text: string) => void;
}) {
  const { wp, activeWorkPackageId, selected, onSelect, onPrefill } = props;

  const refName = wp.shortName || wp.title;
  const visualState = getWorkPackageVisualState({
    workPackage: wp,
    activeWorkPackageId,
  });
  const version = getWorkPackageVersion(wp);

  async function copyReference() {
    const text = `@${refName} `;
    try {
      await navigator.clipboard.writeText(text);
    } catch {
      // ignore
    }
  }

  function prefill(mode: "ask" | "plan" | "change" | "execute") {
    onPrefill(`@${refName} ${mode} `);
  }

  return (
    <Card
      className={[
        "min-h-[112px] rounded-2xl border-0 bg-background/96 transition-colors shadow-sm ring-1 ring-black/5 hover:bg-background",
        selected ? "bg-background ring-2 ring-primary/20" : "",
        visualState === "running" ? "ring-2 ring-amber-300/80 shadow-[0_0_0_1px_rgba(251,191,36,0.15)]" : "",
        visualState === "done" ? "ring-1 ring-emerald-300/70" : "",
      ].join(" ")}
      onClick={onSelect}
      role="button"
      tabIndex={0}
      onKeyDown={(e) => {
        if (e.key === "Enter" || e.key === " ") {
          e.preventDefault();
          onSelect();
        }
      }}
    >
      <CardHeader className="space-y-0 p-2.5">
        <div className="flex items-start justify-between gap-2">
          <div className="min-w-0 flex-1 pr-1">
            <CardTitle className="line-clamp-2 text-[12.5px] font-semibold leading-[1.15rem]">
              {displayTitle(wp.title)}
            </CardTitle>
            <div className="mt-1 flex flex-wrap items-center gap-1">
              <Badge variant="secondary" className="h-4.5 px-1.5 text-[10px]">
                {wp.shortName}
              </Badge>
              <Badge variant="outline" className="h-4.5 px-1.5 text-[10px]">
                {statusLabel(wp.status)}
              </Badge>
              <Badge variant="outline" className="h-4.5 px-1.5 text-[10px]">
                {priorityLabel(wp.priority)}
              </Badge>
              {visualState === "running" ? (
                <Badge
                  variant="outline"
                  className="h-4.5 gap-1 border-amber-300 bg-amber-50 px-1.5 text-[10px] text-amber-700"
                >
                  <LoaderCircle className="h-2.5 w-2.5 animate-spin" />
                  Running
                </Badge>
              ) : null}
              {visualState === "done" && version ? (
                <Badge
                  variant="outline"
                  className="h-4.5 gap-1 border-emerald-300 bg-emerald-50 px-1.5 text-[10px] text-emerald-700"
                >
                  <CheckCircle2 className="h-2.5 w-2.5" />
                  {version}
                </Badge>
              ) : null}
            </div>
          </div>
          <div className="flex shrink-0 items-center gap-0.5">
            <Button
              variant="ghost"
              size="icon"
              className="h-6 w-6"
              onClick={(e) => {
                e.stopPropagation();
                prefill("execute");
              }}
            >
              <Play className="h-3.5 w-3.5" />
            </Button>
            <DropdownMenu>
              <DropdownMenuTrigger asChild>
                <Button
                  variant="ghost"
                  size="icon"
                  className="h-6 w-6 rounded-lg"
                  onClick={(e) => e.stopPropagation()}
                >
                  <MoreHorizontal className="h-3.5 w-3.5" />
                </Button>
              </DropdownMenuTrigger>
              <DropdownMenuContent align="end" className="rounded-xl">
                <DropdownMenuItem
                  onClick={(e) => {
                    e.stopPropagation();
                    prefill("ask");
                  }}
                >
                  Ask
                </DropdownMenuItem>
                <DropdownMenuItem
                  onClick={(e) => {
                    e.stopPropagation();
                    prefill("plan");
                  }}
                >
                  Plan
                </DropdownMenuItem>
                <DropdownMenuItem
                  onClick={(e) => {
                    e.stopPropagation();
                    prefill("change");
                  }}
                >
                  Change
                </DropdownMenuItem>
                <DropdownMenuItem
                  onClick={(e) => {
                    e.stopPropagation();
                    prefill("execute");
                  }}
                >
                  Execute
                </DropdownMenuItem>
                <DropdownMenuItem
                  onClick={(e) => {
                    e.stopPropagation();
                    copyReference();
                    onPrefill(`@${refName} `);
                  }}
                >
                  Copy reference
                </DropdownMenuItem>
              </DropdownMenuContent>
            </DropdownMenu>
          </div>
        </div>
      </CardHeader>

      <CardContent className="space-y-1.5 p-2.5 pt-0">
        <div className="line-clamp-2 text-[10.5px] leading-4 text-muted-foreground">
          {wp.objective}
        </div>

        <div className="flex flex-wrap items-center gap-1.5 text-[10px] text-muted-foreground">
          <div className="inline-flex items-center gap-1">
            <Circle className="h-3 w-3" />
            {wp.tasks.length} tasks
          </div>
          <div>{wp.outputFiles.length} outputs</div>
          <div>{wp.outputs.length} generated</div>
        </div>

        {wp.outputs.length ? (
          <div className="line-clamp-1 text-[10px] text-muted-foreground">
            Latest output: {wp.outputs[wp.outputs.length - 1]?.title}
          </div>
        ) : null}
      </CardContent>
    </Card>
  );
}