#!/usr/bin/env node
// SPDX-License-Identifier: MIT

import { parseArgs } from "node:util";

import { runCommand } from "./cli/commands.ts";
import { usageGetToken } from "./cli/commands/get-token.ts";
import { usageListAppGrants } from "./cli/commands/list-app-grants.ts";
import { usageListAppPermissions } from "./cli/commands/list-app-permissions.ts";
import { usageListApps } from "./cli/commands/list-apps.ts";
import { usageListResourcePermissions } from "./cli/commands/list-resource-permissions.ts";
import { usageLogin } from "./cli/commands/login.ts";
import { usageLogout } from "./cli/commands/logout.ts";
import { usageRest } from "./cli/commands/rest.ts";
import {
  normalizeOutputFormat,
  outputFiltered,
  parseHeaderSpec,
  renderOutput,
} from "@slawek/sk-tools";
import {
  omitPermissionGuidColumns,
} from "./cli/permission-utils.ts";

type CliValues = {
  help?: boolean;
  type?: string;
  method?: string;
  url?: string;
  "display-name"?: string;
  "app-id"?: string;
  resources?: string;
  "use-device-code"?: boolean;
  "no-browser"?: boolean;
  browser?: string;
  "browser-profile"?: string;
  all?: boolean;
  resolve?: boolean;
  short?: boolean;
  filter?: string;
  query?: string;
  header?: string;
  output?: string;
  [key: string]: string | boolean | undefined;
};

function usage(): string {
  return `Usage: sk-az-tools <command> [options]

Commands:
  login                     Authenticate selected resources
  logout                    Sign out and clear login state
  get-token                 Get access token (azurerm|devops)
  rest                      Call REST API endpoint
  list-apps                 List Entra applications
  list-app-permissions      List required permissions for an app
  list-app-grants           List OAuth2 grants for an app
  list-resource-permissions List available permissions for a resource app

Global options (all commands):
  -q, --query <jmespath>
  -o, --output <format>     table|t|alignedtable|at|prettytable|pt|tsv
  -h, --help

Use: sk-az-tools --help <command>
or:  sk-az-tools <command> --help`;
}

function usageCommand(command: string): string {
  switch (command) {
    case "login":
      return usageLogin();
    case "list-apps":
      return usageListApps();
    case "logout":
      return usageLogout();
    case "get-token":
      return usageGetToken();
    case "rest":
      return usageRest();
    case "list-app-permissions":
      return usageListAppPermissions();
    case "list-app-grants":
      return usageListAppGrants();
    case "list-resource-permissions":
      return usageListResourcePermissions();
    default:
      return `Unknown command: ${command}\n\n${usage()}`;
  }
}

async function main(): Promise<void> {
  const argv = process.argv.slice(2);
  const command = argv[0];
  if (!command) {
    console.log(usage());
    process.exit(0);
  }
  if (command === "-h" || command === "--help") {
    const helpCommand = argv[1];
    console.log(helpCommand ? usageCommand(helpCommand) : usage());
    process.exit(0);
  }

  const { values } = parseArgs({
    args: argv.slice(1),
    options: {
      help: { type: "boolean", short: "h" },
      type: { type: "string", short: "t" },
      method: { type: "string" },
      url: { type: "string" },
      "display-name": { type: "string", short: "n" },
      "app-id": { type: "string", short: "i" },
      resources: { type: "string" },
      "use-device-code": { type: "boolean" },
      "no-browser": { type: "boolean" },
      browser: { type: "string" },
      "browser-profile": { type: "string" },
      all: { type: "boolean" },
      resolve: { type: "boolean", short: "r" },
      short: { type: "boolean", short: "s" },
      filter: { type: "string", short: "f" },
      query: { type: "string", short: "q" },
      header: { type: "string", short: "H" },
      output: { type: "string", short: "o" },
    },
    strict: true,
    allowPositionals: false,
  });

  const typedValues = values as CliValues;

  if (typedValues.help) {
    console.log(usageCommand(command));
    process.exit(0);
  }

  const outputFormat = normalizeOutputFormat(typedValues.output);
  const result = await runCommand(command, typedValues);
  const filtered = outputFiltered(result, typedValues.query);
  const output = command === "list-app-permissions" && typedValues.short
    ? omitPermissionGuidColumns(filtered)
    : filtered;
  const headerSpec = command === "rest"
    ? parseHeaderSpec(undefined)
    : parseHeaderSpec(typedValues.header);

  renderOutput(command, output, outputFormat, headerSpec);
}

main().catch((err: unknown) => {
  const error = err as Error;
  console.error(`Error: ${error.message}`);
  console.error(usage());
  process.exit(1);
});