import { Type } from "@sinclair/typebox";
import type { ExtensionAPI } from "../_shared/pi-api.js";
import { errorResult, getCommandText, setTextWidget } from "../_shared/pi-api.js";
import { validateParams } from "../_shared/validation.js";

const BrowserParams = Type.Object({
  action: Type.Union([Type.Literal("open"), Type.Literal("close"), Type.Literal("run")], { description: "OMP browser action" }),
  name: Type.Optional(Type.String({ maxLength: 200, description: "Tab id; defaults to main in OMP" })),
  url: Type.Optional(Type.String({ maxLength: 2000, description: "URL to open" })),
  app: Type.Optional(Type.Object({
    path: Type.Optional(Type.String({ maxLength: 2000 })),
    cdp_url: Type.Optional(Type.String({ maxLength: 2000 })),
    args: Type.Optional(Type.Array(Type.String({ maxLength: 500 }), { maxItems: 50 })),
    target: Type.Optional(Type.String({ maxLength: 500 })),
  })),
  viewport: Type.Optional(Type.Object({
    width: Type.Number(),
    height: Type.Number(),
    scale: Type.Optional(Type.Number()),
  })),
  wait_until: Type.Optional(Type.Union([
    Type.Literal("load"),
    Type.Literal("domcontentloaded"),
    Type.Literal("networkidle0"),
    Type.Literal("networkidle2"),
  ])),
  dialogs: Type.Optional(Type.Union([Type.Literal("accept"), Type.Literal("dismiss")])),
  code: Type.Optional(Type.String({ maxLength: 50_000, description: "Async JS body for OMP browser run" })),
  timeout: Type.Optional(Type.Number({ minimum: 1, maximum: 300 })),
  all: Type.Optional(Type.Boolean()),
  kill: Type.Optional(Type.Boolean()),
});

export default function browser(pi: ExtensionAPI): void {
  pi.registerTool({
    name: "browser",
    description: "Disabled OMP browser wrapper contract. Real browser automation must be ported from OMP before use.",
    parameters: BrowserParams,
    execute(_toolCallId, params) {
      const valid = validateParams(BrowserParams, params);
      if (!valid.ok) return valid.result;
      return browserNotPorted(valid.value.action);
    },
  });
  pi.registerCommand("browser", {
    description: "Browser wrapper status.",
    handler: async (args, ctx) => {
      const text = getCommandText(args).trim();
      setTextWidget(ctx, "browser", browserStatus(text));
    },
  });
}

function browserNotPorted(action: string) {
  return errorResult(
    "Browser automation is disabled in miloc-pi: the previous mock driver was removed. Port OMP BrowserTool before enabling this extension.",
    {
      action,
      defaultEnabled: false,
      ownershipStatus: "omp-owned-to-import",
      ompActions: ["open", "close", "run"],
      sourceEvidence: "docs/source-audit/browser.md",
    },
  );
}

function browserStatus(args: string): string {
  const command = args || "doctor";
  return [
    "browser disabled",
    "status: OMP BrowserTool not ported",
    "mockDriver: removed",
    "targetActions: open, close, run",
    `requestedCommand: ${command}`,
  ].join("\n");
}