#!/usr/bin/env php
<?php

use Phan\Phan;
use Phan\Config;
use Phan\CLI;
use Phan\CLIBuilder;
use Phan\Exception\UsageException;

/*
"Example vim snippet

function! PHPTsynCHK()
  let winnum =winnr() " get current window number
  silent make %
  cw 4 " open the error window if it contains error
  " return to the window with cursor set on the line of the first error (if any)
  execute winnum . "wincmd w"
  :redraw!
endfunction

au! BufWritePost  *.phpt  call PHPTsynCHK()
au BufNewFile,BufRead,BufWrite *.phpt setlocal makeprg=/path/to/bin/php\ /path/to/phan/tool/analyze_phpt errorformat=%f:%l\ %m
 */

/**
 * analyze_phpt is a script for checking a phpt file.
 * This class implements it.
 *
 * @phan-file-suppress PhanPluginRemoveDebugAny
 */
class AnalyzePhpt {
    /**
     * Print usage for analyze_phpt and exit.
     * @return never
     */
    public static function printUsage(int $status) : void {
        global $argv;
        $program = $argv[0];
        fwrite($status !== 0 ? STDERR : STDOUT, <<<EOT
    Usage: $program [options] 'path/to/file.phpt'

    Checks a phpt test case.
    See tool/analyze_phpt file comment for examples of using this as a Vim save action.

    Options:
      -h, --help: Print this help message to stdout.
      -p, --progress-bar: Show a progress bar.
      --target-php-version {5.6,7.0,7.1,7.2,7.3,7.4,8.0,8.1,native}
       The PHP version that the codebase will be checked for compatibility against.
       For best results, the PHP binary used to run Phan should have the same PHP version.
       (Phan relies on Reflection for some param counts
        and checks for undefined classes/methods/functions)

      --minimum-target-php-version {5.6,7.0,7.1,7.2,7.3,7.4,8.0,8.1,native}
       The PHP version that will be used for feature/syntax compatibility warnings.
      --add-parse-file: Add a path to a file to parse but not analyze.
      --color, --no-color: Add or remove colors from the outputted issues.
      --output-mode: Set the output mode.
      --debug: Print debugging info.

EOT
        );
        exit($status);
    }

    private const GETOPT_LONG_OPTIONS = [
        'help',
        'progress-bar',
        'add-parse-file:',
        'color',
        'no-color',
        'output-mode:',
        'debug',
        'target-php-version:',
        'minimum-target-php-version:',
    ];

    private const GETOPT_SHORT_OPTIONS = "hp";

    /**
     * Script entrypoint to analyze phpt files. See printUsage for details.
     */
    public static function main(): void {
        global $argv;
        $options = getopt(
            self::GETOPT_SHORT_OPTIONS,
            self::GETOPT_LONG_OPTIONS,
            $optind
        );
        $has_any_option = static function (string ...$arg_names) use ($options) : bool {
            foreach ($arg_names as $arg) {
                if (array_key_exists($arg, $options)) {
                    return true;
                }
            }
            return false;
        };

        if ($has_any_option('h', 'help')) {
            self::printUsage(0);
        }

        require_once(__DIR__ . '/../src/Phan/Bootstrap.php');
        try {
            CLI::checkAllArgsUsed($options, $argv, self::GETOPT_SHORT_OPTIONS, self::GETOPT_LONG_OPTIONS);
        } catch (UsageException $e) {
            fwrite(STDERR, $e->getMessage());
            self::printUsage(1);
        }

        $files_to_analyze = array_slice($argv, $optind);
        if (count($files_to_analyze) < 1) {
            fwrite(STDERR, "ERROR: Expected 1 or more arguments with the phpt files to check\n");
            self::printUsage(1);
        }

        $extra_files_to_parse = ($options['add-parse-file'] ?? []) ?: [];
        if (!is_array($extra_files_to_parse)) {
            $extra_files_to_parse = [$extra_files_to_parse];
        }
        $files_to_parse = array_merge($files_to_analyze, $extra_files_to_parse);

        foreach ($files_to_parse as $file) {
            $file = Config::projectPath($file);
            if (!is_file($file)) {
                fprintf(STDERR, "Warning: %s does not exist\n", var_representation($file));
            }
        }
        Config::setValue('file_list', $files_to_analyze);
        // exclude_file_list is currently redundant to add but harmless.
        Config::setValue('exclude_file_list', array_diff($extra_files_to_parse, $files_to_analyze));
        Config::setValue('include_analysis_file_list', $files_to_analyze);
        $cli_builder = new CLIBuilder();
        $cli_builder->setOption('no-config-file', false);
        $cli_builder->setOption('allow-polyfill-parser', false);
        if ($has_any_option('p', 'progress-bar')) {
            $cli_builder->setOption('progress-bar');
        } else {
            $cli_builder->setOption('no-progress-bar');
        }
        $default_target_php_version = $options['target-php-version'] ?? sprintf('%d.%d', PHP_MAJOR_VERSION, PHP_MINOR_VERSION);
        $options['target-php-version'] = $default_target_php_version;
        $options['minimum-target-php-version'] = $options['minimum-target-php-version'] ?? $default_target_php_version;
        foreach ([
            'debug',
            'color',
            'no-color',
            'color-scheme',
            'output-mode',
            'target-php-version',
            'minimum-target-php-version',
        ] as $option_name) {
            if (array_key_exists($option_name, $options)) {
                $cli_builder->setOption($option_name, $options[$option_name]);
            }
        }
        if (array_key_exists('debug', $options)) {
            $cli_builder->setOption('debug');
        }
        // CLIBuilder::build will set config options as a side effect
        // @phan-suppress-next-line PhanThrowTypeAbsentForCall
        $cli_builder->build();
        Config::setValue('analyzed_file_extensions', ['phpt', 'php', 'inc']);
        // Generate codebase info after parsing configs (e.g. included_extension_subset)
        $code_base = require(__DIR__ . '/../src/codebase.php');

        // @phan-suppress-next-line PhanThrowTypeAbsentForCall
        Phan::analyzeFileList($code_base, /** @return string[] */ static function () use($files_to_parse) : array {
            return $files_to_parse;
        });
    }
}
AnalyzePhpt::main();