import * as core from '@actions/core';
import { CategoryScale, Chart, LinearScale, LineController, LineElement, PointElement, BarController, BarElement } from 'chart.js';
import { readFile, writeFile } from 'fs/promises';
import { addRepoDetails, formatGitHubSummary } from './summaries/github.js';
import { addNpmDetails, formatNpmSummary } from './summaries/npm.js';
import { formatPowerShellSummary, addPowerShellDetails } from './summaries/powershell.js';
import { addPypiDetails, addPypiCharts, formatPypiSummary } from './summaries/pypi.js';
Chart.register([
    CategoryScale,
    LineController,
    LineElement,
    LinearScale,
    PointElement,
    BarController,
    BarElement
]);
/**
 * Parse comma-separated inputs into arrays
 * @param input - The input string to parse
 * @returns An array of trimmed, non-empty items
 */
function parseCommaSeparatedInputs(input) {
    return input ? input.split(',').map(item => item.trim()).filter(item => item) : [];
}
export function getInputs() {
    // Get all inputs from action.yml
    const npmPackages = core.getInput('npm-packages');
    const githubRepositories = core.getInput('github-repositories');
    const pypiPackages = core.getInput('pypi-packages');
    const powershellModules = core.getInput('powershell-modules');
    const jsonOutputPath = core.getInput('json-output-path');
    const updateReadme = core.getInput('update-readme').toLowerCase() === 'true';
    const commitMessage = core.getInput('commit-message');
    const readmePath = core.getInput('readme-path');
    return {
        npmPackages: parseCommaSeparatedInputs(npmPackages),
        githubRepositories: parseCommaSeparatedInputs(githubRepositories),
        pypiPackages: parseCommaSeparatedInputs(pypiPackages),
        powershellModules: parseCommaSeparatedInputs(powershellModules),
        jsonOutputPath,
        updateReadme,
        commitMessage,
        readmePath,
    };
}
const MetricsPlaceHolderRegex = /<!-- METRICS_START -->[\s\S]*<!-- METRICS_END -->/;
function formatSummary(summary) {
    return `<!-- METRICS_START -->\n${summary}\n<!-- METRICS_END -->`;
}
const PlatformMap = {
    "NPM": "JavaScript/TypeScript",
    "PyPI": "Python",
    "PowerShell Gallery": undefined,
    "GitHub": undefined,
};
export async function createSummary(metrics) {
    const platforms = metrics.map(metric => metric.platform).filter((value, index, self) => self.indexOf(value) === index);
    console.log(platforms);
    console.log(metrics);
    let summary = `# Usage Statistics
    
Last updated: ${new Date().toLocaleString()}

Below are stats from artifacts tracked across ${platforms.slice(0, -1).join(', ')} and ${platforms.slice(-1)}.
    
`;
    for (const platform of platforms) {
        const platformMetrics = metrics.filter(metric => metric.platform === platform);
        const platformLanguage = PlatformMap[platform];
        summary += `### ${platform}${platformLanguage ? ` (${platformLanguage})` : ''}: \n\n`;
        switch (platform) {
            case "NPM":
                summary = formatNpmSummary(summary, platformMetrics);
                break;
            case "GitHub":
                summary = formatGitHubSummary(summary, platformMetrics);
                break;
            case "PyPI":
                summary = formatPypiSummary(summary, platformMetrics);
                break;
            case "PowerShell":
                summary = formatPowerShellSummary(summary, platformMetrics);
                break;
            default:
                let platformDownloadTotal = 0;
                summary += `| Package | Downloads |\n`;
                summary += `| --- | --- |\n`;
                for (const metric of platformMetrics) {
                    summary += `| ${metric.name} | ${metric.metrics?.downloadCount?.toLocaleString() || 0} |\n`;
                    platformDownloadTotal += metric.metrics?.downloadCount || 0;
                }
                summary += `| **Total** | **${platformDownloadTotal.toLocaleString()}** |\n`;
                break;
        }
        summary += `\n`;
        // Add detailed information for each platform
        switch (platform) {
            case "GitHub":
                summary = await addRepoDetails(summary, platformMetrics);
                break;
            case "PyPI":
                summary = addPypiDetails(summary, platformMetrics);
                summary = await addPypiCharts(summary, platformMetrics);
                break;
            case "NPM":
                summary = await addNpmDetails(summary, platformMetrics);
                break;
            case "PowerShell":
                summary = await addPowerShellDetails(summary, platformMetrics);
                break;
            default:
                break;
        }
        summary += '\n';
    }
    return summary;
}
export async function updateRepositoryReadme(metrics, readmePath) {
    const currentReadme = await readFile(readmePath, 'utf8');
    const summary = await createSummary(metrics);
    const updatedReadme = currentReadme.replace(MetricsPlaceHolderRegex, formatSummary(summary));
    await writeFile(readmePath, updatedReadme);
}