// <LinkGithubAccountForm> — writes a GitHub personal access token for one
// agent into the swarm secret store.
// PUTs `/api/hives/{hive}/agents/{agent}/github-account` — 204 on success,
// 400/500 as `problem+json`, shown via `ApiErrorPanel` like
// `LinkForgeAccountForm`.
//
// One token per agent. A blind set/update: no route says whether a token is
// stored, and none hands one back.
import { useState } from "preact/hooks";
import { ApiErrorPanel } from "@hive/shared/api-error-panel.js";
import { readApiError, type ProblemDetails } from "@hive/shared/api-error.js";
import { Panel } from "../ui/panel/Panel.js";
import { TextField } from "../ui/text-field/TextField.js";
import { Button } from "../ui/button/Button.js";
import "./LinkMatrixAccountForm.css";

type SubmitState =
  | { status: "idle" }
  | { status: "submitting" }
  | { status: "done" }
  | { status: "error"; problem: ProblemDetails };

export function LinkGithubAccountForm({
  hive,
  agent,
  onClose,
}: {
  hive: string;
  agent: string;
  onClose?: () => void;
}) {
  const [token, setToken] = useState("");
  const [result, setResult] = useState<SubmitState>({ status: "idle" });

  async function submit(e: Event) {
    e.preventDefault();
    setResult({ status: "submitting" });
    try {
      const r = await fetch(
        `/api/hives/${encodeURIComponent(hive)}/agents/${encodeURIComponent(agent)}/github-account`,
        {
          method: "PUT",
          headers: { "content-type": "application/json" },
          body: JSON.stringify({ token }),
        },
      );
      if (!r.ok) {
        setResult({ status: "error", problem: await readApiError(r) });
        return;
      }
      setResult({ status: "done" });
      // The store holds the token; nothing here needs it.
      setToken("");
    } catch (err) {
      setResult({ status: "error", problem: { detail: String(err) } });
    }
  }

  return (
    <Panel
      title={`link a github account — ${agent}`}
      icon="🔗"
      onClose={onClose}
    >
      <p>
        Writes the token to the swarm secret store. The agent fetches it within
        two minutes, and its <code>gh</code> and <code>git push</code> to
        github.com then authenticate with it. Use a dedicated bot account and a
        minimally scoped token, created at{" "}
        <a
          href="https://github.com/settings/tokens"
          target="_blank"
          rel="noopener noreferrer"
        >
          github.com/settings/tokens
        </a>
        ; GitHub notifications also need the <code>notifications</code> scope.
      </p>
      <form class="link-matrix-account-form" onSubmit={submit}>
        <TextField
          id="github-account-token"
          label="personal access token"
          type="password"
          value={token}
          required
          onInput={setToken}
        />
        <Button
          variant="primary"
          type="submit"
          disabled={result.status === "submitting"}
        >
          {result.status === "submitting" ? "linking…" : "link account"}
        </Button>
      </form>
      {result.status === "done" && (
        <p class="link-matrix-account-result-ok">
          stored a github token for <strong>{agent}</strong>
        </p>
      )}
      {result.status === "error" && (
        <ApiErrorPanel
          context="failed to link the account"
          problem={result.problem}
        />
      )}
    </Panel>
  );
}