import { useState } from "react";
import { post } from "../api";
import { getLang, useT } from "../i18n";
import { JOB_TEMPLATES, type JobTemplate } from "../jobTemplates";
import { navigate } from "../router";
import { Icon } from "./Icon";
import { FolderPicker } from "./NewSession";

/** Starting point of a new instructions file: headings to fill in (with the assistant). */
function example(name: string, de: boolean) {
  return de
    ? `# ${name}

## Ziel
Was soll diese Automatisierung erreichen? (ein, zwei Sätze)

## Vorgehen
1. …
2. …

## Ergebnis
Was am Ende vorliegen soll – z. B. ein kurzer Bericht, geänderte Dateien, ein Commit.

## Grenzen
- Was der Agent nicht tun darf (z. B. nichts pushen, nichts löschen).
`
    : `# ${name}

## Goal
What should this automation achieve? (one or two sentences)

## Steps
1. …
2. …

## Result
What should exist at the end – e.g. a short report, changed files, a commit.

## Limits
- What the agent must not do (e.g. no pushing, no deleting).
`;
}

/**
 * New automation: name, project and a starting point (example or template). Creates the
 * instructions file (<project>/.codecraft/jobs/<name>.md, switched off) and opens the
 * editor, where the schedule is set and the instructions are worked out.
 */
export function NewJobDialog({ onClose }: { onClose: () => void }) {
  const t = useT();
  const de = getLang() === "de";
  const [tpl, setTpl] = useState<JobTemplate>();
  const [name, setName] = useState("");
  const [cwd, setCwd] = useState(localStorage.getItem("codecraft.lastDir") ?? "");
  const [error, setError] = useState<string>();
  const [busy, setBusy] = useState(false);

  const choose = (x?: JobTemplate) => {
    setTpl(x);
    if (x && (!name.trim() || JOB_TEMPLATES.some((y) => name === y.name.de || name === y.name.en))) setName(de ? x.name.de : x.name.en);
  };

  const create = async () => {
    setBusy(true);
    setError(undefined);
    try {
      const n = name.trim();
      const job = await post<{ id: string }>("/jobs/create", {
        cwd,
        name: n,
        prompt: tpl ? `# ${n}\n\n${tpl.prompt}\n` : example(n, de),
        schedule: tpl?.schedule,
        agent: tpl?.agent,
      });
      onClose();
      navigate(`/jobs/${job.id}`);
    } catch (e: any) {
      setError(e.message);
    } finally {
      setBusy(false);
    }
  };

  return (
    <div className="modal-backdrop" onClick={onClose}>
      <div className="modal job-tpl" role="dialog" aria-label={t("jobs.new")} onClick={(e) => e.stopPropagation()}>
        <h3>{t("jobs.new")}</h3>
        <label className="field">
          <span>{t("jobs.tplName")}</span>
          <input autoFocus value={name} placeholder={t("jobs.namePlaceholder")} onChange={(e) => setName(e.target.value)} />
        </label>
        <div className="field">
          <span>{t("jobs.tplProject")}</span>
          <FolderPicker path={cwd} onPick={setCwd} />
          <small className="hint">{t("jobs.fileHint")}</small>
        </div>
        <div className="field">
          <span>{t("jobs.startWith")}</span>
          <div className="job-tpl-grid">
            <button className={`job-tpl-card ${!tpl ? "active" : ""}`} onClick={() => choose(undefined)}>
              <Icon name="file-text" />
              <span>
                <b>{t("jobs.blank")}</b>
                <small>{t("jobs.blankDesc")}</small>
              </span>
            </button>
            {JOB_TEMPLATES.map((x) => (
              <button key={x.id} className={`job-tpl-card ${tpl?.id === x.id ? "active" : ""}`} onClick={() => choose(x)}>
                <Icon name={x.icon} />
                <span>
                  <b>{de ? x.name.de : x.name.en}</b>
                  <small>{de ? x.desc.de : x.desc.en}</small>
                </span>
              </button>
            ))}
          </div>
        </div>
        {error && <div className="notice err">{error}</div>}
        <div className="row" style={{ marginTop: 12, justifyContent: "flex-end" }}>
          <button onClick={onClose}>{t("common.cancel")}</button>
          <button className="primary" disabled={busy || !cwd || !name.trim()} onClick={create}>
            {t("jobs.createAndEdit")}
          </button>
        </div>
      </div>
    </div>
  );
}