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/// Command-line entry point: resolve CEPs from a terminal.
///
/// ```sh
/// dart run cepis 01001000
/// dart run cepis --base-url http://localhost:8080 01001000 20040020
/// ```
library;
import 'dart:convert';
import 'dart:io';
import 'package:cepis/cepis.dart';
const String _usage = '''
usage: cepis [--base-url URL] [--health] [CEP...]
--base-url URL where the API lives (default $defaultBaseUrl)
--health report the API's health instead of looking anything up
-h, --help show this message
One CEP prints the full record, coordinate included. Several go through the
batch endpoint, which carries no coordinate.''';
Future<int> run(List<String> arguments) async {
var baseUrl = defaultBaseUrl;
var wantHealth = false;
final ceps = <String>[];
for (var i = 0; i < arguments.length; i++) {
final argument = arguments[i];
if (argument == '-h' || argument == '--help') {
stdout.writeln(_usage);
return 0;
} else if (argument == '--health') {
wantHealth = true;
} else if (argument == '--base-url') {
if (i + 1 >= arguments.length) {
stderr.writeln('cepis: --base-url needs a value');
return 2;
}
baseUrl = arguments[++i];
} else if (argument.startsWith('-')) {
stderr.writeln('cepis: unknown option $argument');
return 2;
} else {
ceps.add(argument);
}
}
if (!wantHealth && ceps.isEmpty) {
stderr.writeln(_usage);
return 2;
}
final client = Client(baseUrl: baseUrl);
try {
if (wantHealth) {
final report = await client.health();
stdout.writeln(_encode(report.raw));
return report.ok ? 0 : 1;
}
if (ceps.length == 1) {
final address = await client.lookup(ceps.single);
stdout.writeln(_encode(address.raw));
return 0;
}
final result = await client.lookupMany(ceps);
for (var i = 0; i < ceps.length; i++) {
final address = result[i];
stdout.writeln(
address == null
? '${ceps[i]}\tnot found'
: '${ceps[i]}\t${address.logradouro}\t${address.localidade}\t'
'${address.uf}',
);
}
return 0;
} on CepisException catch (error) {
stderr.writeln('cepis: ${error.message}');
return 1;
} finally {
client.close();
}
}
String _encode(Map<String, dynamic> data) =>
const JsonEncoder.withIndent(' ').convert(data);
Future<void> main(List<String> arguments) async {
exitCode = await run(arguments);
}
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