import { promises as fs } from 'fs';
import path from 'path';
import { TemplateInfo, TemplateVariable } from './types.js';
import { FileUtils, DateUtils } from './utils.js';
export class TemplateEngine {
constructor(private templatesDir: string) {}
async getAvailableTemplates(): Promise<TemplateInfo[]> {
try {
const files = await fs.readdir(this.templatesDir);
const templates: TemplateInfo[] = [];
for (const file of files) {
if (file.endsWith('.md')) {
const templatePath = path.join(this.templatesDir, file);
const content = await fs.readFile(templatePath, 'utf-8');
const templateInfo = this.parseTemplate(file, templatePath, content);
templates.push(templateInfo);
}
}
return templates;
} catch (error) {
throw new Error(`テンプレートディレクトリの読み込みに失敗しました: ${error instanceof Error ? error.message : String(error)}`);
}
}
async processTemplate(templateName: string, variables: Record<string, any>): Promise<string> {
const templatePath = path.join(this.templatesDir, `${templateName}.md`);
if (!(await FileUtils.fileExists(templatePath))) {
throw new Error(`テンプレート '${templateName}' が見つかりません`);
}
const template = await fs.readFile(templatePath, 'utf-8');
// システム変数を追加
const allVariables = {
...variables,
date: DateUtils.getCurrentDate(),
time: DateUtils.getCurrentTime(),
datetime: DateUtils.getCurrentDateTime()
};
return this.replaceVariables(template, allVariables);
}
private parseTemplate(fileName: string, filePath: string, content: string): TemplateInfo {
const variables: TemplateVariable[] = [];
const variableRegex = /\{\{(\w+)\}\}/g;
let match;
while ((match = variableRegex.exec(content)) !== null) {
const varName = match[1];
if (!variables.find(v => v.name === varName)) {
variables.push({ name: varName, required: true });
}
}
// YAMLフロントマターから説明を抽出
const frontMatterMatch = content.match(/^---\n([\s\S]*?)\n---/);
let description = '';
if (frontMatterMatch) {
const yamlContent = frontMatterMatch[1];
const descMatch = yamlContent.match(/description:\s*(.+)/);
if (descMatch) {
description = descMatch[1].trim();
}
}
return {
name: fileName.replace('.md', ''),
path: filePath,
variables,
description
};
}
private replaceVariables(template: string, variables: Record<string, any>): string {
return template.replace(/\{\{(\w+)\}\}/g, (match, key) => {
if (key in variables) {
return String(variables[key]);
}
return match; // 変数が見つからない場合はそのまま残す
});
}
}
