import { Check, FileCode2, ShieldAlert, X } from "lucide-react"

import type { WorkflowApproval } from "@/lib/agents/api"

import { Button } from "@/components/ui/button"
import {
  Card,
  CardContent,
  CardDescription,
  CardFooter,
  CardHeader,
  CardTitle,
} from "@/components/ui/card"

type ApprovalStatus = "pending" | "approved" | "rejected" | string

interface WorkflowApprovalCardProps {
  approval: WorkflowApproval
  isOwner: boolean
  isPending: boolean
  onApprove: (fingerprint: string) => void
  onReject: (fingerprint: string) => void
}

function statusBadgeClass(status: ApprovalStatus) {
  switch (status) {
    case "approved":
      return "bg-green-500/10 text-green-600 dark:text-green-400"
    case "rejected":
      return "bg-red-500/10 text-red-600 dark:text-red-400"
    default:
      return "bg-amber-500/10 text-amber-600 dark:text-amber-400"
  }
}

function statusLabel(status: ApprovalStatus) {
  switch (status) {
    case "approved":
      return "Approved"
    case "rejected":
      return "Rejected"
    default:
      return "Pending approval"
  }
}

export function WorkflowApprovalCard({
  approval,
  isOwner,
  isPending,
  onApprove,
  onReject,
}: WorkflowApprovalCardProps) {
  const actionable = isOwner && approval.status === "pending" && !isPending
  const decided = approval.status !== "pending"

  return (
    <Card className="mx-auto mb-4 w-full max-w-3xl border-amber-500/20 bg-amber-500/5 dark:bg-amber-500/10">
      <CardHeader className="pb-2">
        <div className="flex items-start justify-between gap-3">
          <div className="flex items-center gap-2">
            <ShieldAlert className="size-4 text-amber-600 dark:text-amber-400" />
            <CardTitle className="text-sm font-medium">
              Workflow push approval required
            </CardTitle>
          </div>
          <span
            className={`rounded px-1.5 py-0.5 text-[10px] font-medium tracking-wide uppercase ${statusBadgeClass(
              approval.status
            )}`}
          >
            {statusLabel(approval.status)}
          </span>
        </div>
        <CardDescription className="text-xs">
          Open SWE is trying to push GitHub workflow file changes in{" "}
          <strong>{approval.repo}</strong> on <strong>{approval.branch}</strong>
          . Approve only if this exact workflow diff is expected.
        </CardDescription>
      </CardHeader>
      <CardContent className="pb-3">
        <div className="space-y-2">
          <div className="flex items-center gap-2 text-[11px] font-medium text-[var(--ui-text-muted)]">
            <FileCode2 className="size-3.5" />
            Changed workflow files
          </div>
          <ul className="space-y-1">
            {approval.files.map((file) => (
              <li
                key={file}
                className="font-mono text-[11px] break-all text-[var(--ui-text)]"
              >
                {file}
              </li>
            ))}
          </ul>
          <div className="pt-1 text-[11px] text-[var(--ui-text-muted)]">
            Fingerprint:{" "}
            <code className="rounded bg-[var(--ui-panel)] px-1 py-0.5 text-[var(--ui-text)]">
              {approval.fingerprint}
            </code>
          </div>
        </div>
      </CardContent>
      {actionable ? (
        <CardFooter className="gap-2 border-t border-[var(--ui-border)] pt-3">
          <Button
            size="sm"
            onClick={() => onApprove(approval.fingerprint)}
            disabled={isPending}
          >
            <Check className="mr-1 size-3.5" />
            Approve
          </Button>
          <Button
            size="sm"
            variant="destructive"
            onClick={() => onReject(approval.fingerprint)}
            disabled={isPending}
          >
            <X className="mr-1 size-3.5" />
            Reject
          </Button>
        </CardFooter>
      ) : decided ? (
        <CardFooter className="border-t border-[var(--ui-border)] pt-3 text-[11px] text-[var(--ui-text-muted)]">
          This workflow push has been {approval.status}. If the workflow files
          change, a new fingerprint will be required.
        </CardFooter>
      ) : null}
      {!isOwner && approval.status === "pending" && (
        <CardFooter className="border-t border-[var(--ui-border)] pt-3 text-[11px] text-[var(--ui-text-muted)]">
          Only the thread owner can approve or reject this workflow push.
        </CardFooter>
      )}
    </Card>
  )
}