Artifacts

"use client";

import { useState } from "react";
import { useRouter } from "next/navigation";
import Link from "next/link";
import { Plus, X, Loader2, Target, ArrowRight } from "lucide-react";
import { Button } from "@/components/ui/button";
import { Input } from "@/components/ui/input";
import { Card } from "@/components/ui/card";
import { PriorityBadge } from "@/components/shared/status-badge";
import { ObjectiveStatusSelect } from "./objective-status-select";
import type { OwnerOption } from "./create-mission-form";
import type {
  MissionPriority,
  MissionProgress,
  Objective,
} from "@/lib/missions/types";

const PRIORITIES: MissionPriority[] = ["P0", "P1", "P2", "P3"];

/**
 * Objectives section on a mission: mission progress, create objective, and the
 * objective list with inline status control. Objectives do not dispatch — they
 * organize future execution and gate mission completion.
 */
export function ObjectivesPanel({
  missionId,
  objectives,
  progress,
  owners,
}: {
  missionId: string;
  objectives: Objective[];
  progress: MissionProgress;
  owners: OwnerOption[];
}) {
  const router = useRouter();
  const [open, setOpen] = useState(false);
  const [busy, setBusy] = useState(false);
  const [error, setError] = useState<string | null>(null);
  const firstActive = owners.find((o) => o.active)?.id ?? owners[0]?.id ?? "";
  const [form, setForm] = useState({
    title: "",
    description: "",
    owner_executive: firstActive,
    priority: "P2" as MissionPriority,
    success_criteria: "",
  });

  async function create(e: React.FormEvent) {
    e.preventDefault();
    setBusy(true);
    setError(null);
    try {
      const res = await fetch(`/api/missions/${missionId}/objectives`, {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({
          ...form,
          success_criteria: form.success_criteria
            .split("\n")
            .map((s) => s.trim())
            .filter(Boolean),
        }),
      });
      const data = await res.json().catch(() => ({}));
      if (!res.ok) throw new Error(data.error ?? "Could not create objective.");
      setForm({ ...form, title: "", description: "", success_criteria: "" });
      setOpen(false);
      router.refresh();
    } catch (err) {
      setError(err instanceof Error ? err.message : "Could not create objective.");
    } finally {
      setBusy(false);
    }
  }

  return (
    <Card className="p-6">
      <div className="mb-4 flex flex-wrap items-center justify-between gap-3">
        <div className="flex items-center gap-2 text-[11px] font-semibold uppercase tracking-[0.1em] text-muted-foreground">
          <Target className="h-3.5 w-3.5" /> Objectives
        </div>
        <Button type="button" size="sm" variant="outline" onClick={() => setOpen((v) => !v)}>
          {open ? <X className="h-3.5 w-3.5" /> : <Plus className="h-3.5 w-3.5" />}
          {open ? "Close" : "Create Objective"}
        </Button>
      </div>

      {/* Mission progress */}
      <div className="mb-5">
        <div className="mb-1.5 flex items-center justify-between text-[13px]">
          <span className="font-medium text-foreground">Mission Progress</span>
          <span className="tabular-nums text-muted-foreground">
            {progress.completed} / {progress.total} · {progress.percentage}%
          </span>
        </div>
        <div className="h-2 w-full overflow-hidden rounded-full bg-secondary">
          <div
            className="h-full rounded-full bg-emerald-500 transition-all"
            style={{ width: `${progress.percentage}%` }}
          />
        </div>
      </div>

      {open && (
        <form onSubmit={create} className="mb-5 space-y-3 rounded-md border border-border p-4">
          <Input
            value={form.title}
            onChange={(e) => setForm({ ...form, title: e.target.value })}
            placeholder="Objective title"
            required
          />
          <textarea
            value={form.description}
            onChange={(e) => setForm({ ...form, description: e.target.value })}
            placeholder="What measurable outcome must become true?"
            rows={2}
            required
            className="flex w-full rounded-md border border-input bg-background px-3 py-2 text-sm focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring"
          />
          <textarea
            value={form.success_criteria}
            onChange={(e) => setForm({ ...form, success_criteria: e.target.value })}
            placeholder="Success criteria (one per line)"
            rows={2}
            className="flex w-full rounded-md border border-input bg-background px-3 py-2 text-sm focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring"
          />
          <div className="flex flex-wrap items-end gap-3">
            <label className="flex-1">
              <span className="mb-1 block text-[11px] font-semibold uppercase tracking-[0.08em] text-muted-foreground">
                Owner
              </span>
              <select
                value={form.owner_executive}
                onChange={(e) => setForm({ ...form, owner_executive: e.target.value })}
                className="h-9 w-full rounded-md border border-input bg-background px-2 text-sm"
              >
                {owners.map((o) => (
                  <option key={o.id} value={o.id}>
                    {o.label}
                  </option>
                ))}
              </select>
            </label>
            <label>
              <span className="mb-1 block text-[11px] font-semibold uppercase tracking-[0.08em] text-muted-foreground">
                Priority
              </span>
              <select
                value={form.priority}
                onChange={(e) => setForm({ ...form, priority: e.target.value as MissionPriority })}
                className="h-9 rounded-md border border-input bg-background px-2 text-sm"
              >
                {PRIORITIES.map((p) => (
                  <option key={p}>{p}</option>
                ))}
              </select>
            </label>
            <Button type="submit" size="sm" disabled={busy}>
              {busy ? <Loader2 className="h-3.5 w-3.5 animate-spin" /> : "Create"}
            </Button>
          </div>
          {error && <p className="text-[12px] text-destructive">{error}</p>}
        </form>
      )}

      {objectives.length === 0 ? (
        <p className="text-sm text-muted-foreground">
          No objectives yet. Mission completion requires every objective to be
          Completed.
        </p>
      ) : (
        <ul className="divide-y divide-border">
          {objectives.map((o) => (
            <li key={o.id} className="flex flex-wrap items-center gap-3 py-2.5">
              <div className="min-w-0 flex-1">
                <Link
                  href={`/mission-control/${missionId}/objectives/${o.id}`}
                  className="inline-flex items-center gap-1.5 text-[14px] font-medium text-foreground hover:underline"
                >
                  <span className="font-mono text-[11px] text-muted-foreground">
                    {o.id.replace("OBJECTIVE-", "O-")}
                  </span>
                  {o.title}
                  <ArrowRight className="h-3 w-3 text-muted-foreground/50" />
                </Link>
                <div className="mt-0.5 text-[12px] text-muted-foreground">
                  <span className="font-mono">{o.owner_executive ?? "—"}</span> ·{" "}
                  {o.completion_percentage}%
                </div>
              </div>
              <PriorityBadge priority={o.priority} />
              <ObjectiveStatusSelect missionId={missionId} oid={o.id} status={o.status} />
            </li>
          ))}
        </ul>
      )}
    </Card>
  );
}