<?php

require_once("parse_generic_csv.php");

$options = getopt("", ["generic-csv:", "config-files:"]);

if (isset($options['generic-csv'])) {
    $generic_csv = $options['generic-csv'];
} else {
    error_log("Error: Missing required option '--generic-csv'.");
    exit(1);
}

if (isset($options['config-files'])) {
    $config_files = $options['config-files'];
} else {
    error_log("Error: Missing required option '--config-files'.");
    exit(1);
}

$config_files = explode(" ", $config_files);
$candidate_data = parse_generic_csv($generic_csv);

$lga_list = [];
/* Generate dictionary of LGAs and Wards */
foreach ($config_files as $config_file) {
    $config_string = file_get_contents($config_file);
    if ($config_string !== FALSE) {
        $config = json_decode($config_string, true);
    } else {
        error_log("Error opening config.json.");
        exit(1);
    }
    $config['config-file'] = $config_file;
    $lga_list[] = $config;
}

/* Match user typed LGA/Ward to our database */
match_lga($candidate_data, $lga_list);

/* Calculate score for candidate */
foreach ($candidate_data as $key => $candidate) {
    $score = 0;

    if ($candidate['Pledge'] === "y") $score++;
    if ($candidate['q1'] === "Yes") $score++;
    if ($candidate['q3'] === "Yes") $score++;
    if ($candidate['q4'] === "Yes") $score++;
    if ($candidate['q7'] === "Yes") $score++;

    $candidate_data[$key]['Score'] = $score;
}

$header = ["Ward", "Candidate Name", "Rating", "Pledge", "Picture"];

/* Generate candidates-generic.csv */
foreach ($lga_list as $lga) {
    $lga_candidates = array_filter($candidate_data, function ($candidate) use ($lga) {
        return $candidate['match_lga'] === $lga['slug'];
    });

    if (count($lga_candidates) === 0) continue;

    $dir = dirname($lga['config-file']);
    $dir_files = scandir($dir);
    $output_file = $dir."/candidates-generic.csv";

    if (($handle = fopen($output_file, "w")) === FALSE) {
        error_log('Error opening output file');
        exit(1);
    }

    if (fputcsv($handle, $header) === FALSE) {
        error_log('Error writing headers to output file');
        exit(3);
    }

    foreach ($lga_candidates as $candidate) {
        /* Add extension to photo hash */
        if (strlen($candidate['Photo'])) {
            foreach ($dir_files as $file) {
                if (preg_match("/\.json$/", $file)) continue;
                if (strstr($file, $candidate['Photo'])) {
                    $candidate['Photo'] = $file;
                }
            }
        }

        $fields = [
            $candidate['match_ward'],
            $candidate['Name'],
            $candidate['Score'],
            $candidate['Pledge'],
            $candidate['Photo'],
        ];

        if (fputcsv($handle, $fields) === FALSE) {
            error_log('Error writing candidate to output file');
            exit(3);
        }
    }
}

exit(0);