export class EmailSummarizer {
static summarizeEmail(email) {
const summary = {
subject: email.subject,
sender: email.sender,
receivedTime: email.receivedTime,
isRead: email.isRead,
hasAttachments: email.hasAttachments,
bodyPreview: this.extractBodyPreview(email.body),
keyPoints: this.extractKeyPoints(email.body),
priority: this.detectPriority(email.subject, email.body),
actionRequired: this.detectActionRequired(email.body)
};
return this.formatSummary(summary);
}
static summarizeMultipleEmails(emails) {
const summaries = emails.map(email => ({
id: email.id,
subject: email.subject,
sender: email.sender,
receivedTime: email.receivedTime,
isRead: email.isRead,
priority: this.detectPriority(email.subject, email.body),
actionRequired: this.detectActionRequired(email.body),
bodyPreview: this.extractBodyPreview(email.body)
}));
return this.formatMultipleSummaries(summaries);
}
/**
* 全文検索でメールをフィルタリング
* @param emails 検索対象のメール配列
* @param searchTerm 検索語（大文字小文字を区別しない）
* @returns 検索語を含むメールの配列
*/
static searchEmails(emails, searchTerm) {
if (!searchTerm.trim()) {
return emails;
}
const normalizedSearchTerm = searchTerm.toLowerCase();
return emails.filter(email => {
// 件名での検索
const subjectMatch = email.subject.toLowerCase().includes(normalizedSearchTerm);
// 送信者での検索
const senderMatch = email.sender.toLowerCase().includes(normalizedSearchTerm);
// 本文での検索（HTMLタグを除去して検索）
const cleanBody = email.body.replace(/<[^>]*>/g, '').toLowerCase();
const bodyMatch = cleanBody.includes(normalizedSearchTerm);
return subjectMatch || senderMatch || bodyMatch;
});
}
/**
* 検索語を含むメールのサマリーを生成（検索コンテキスト付き）
* @param emails 検索結果のメール配列
* @param searchTerm 検索語
* @returns 検索結果のサマリー文字列
*/
static summarizeSearchResults(emails, searchTerm) {
if (emails.length === 0) {
return `🔍 **検索結果**\n検索語「${searchTerm}」に一致するメールが見つかりませんでした。`;
}
const summaries = emails.map(email => ({
id: email.id,
subject: email.subject,
sender: email.sender,
receivedTime: email.receivedTime,
isRead: email.isRead,
priority: this.detectPriority(email.subject, email.body),
actionRequired: this.detectActionRequired(email.body),
bodyPreview: this.extractBodyPreview(email.body),
searchContext: this.extractSearchContext(email, searchTerm)
}));
return this.formatSearchResults(summaries, searchTerm);
}
/**
* 検索語の周辺コンテキストを抽出
* @param email メールオブジェクト
* @param searchTerm 検索語
* @returns 検索語を含む文章の抜粋
*/
static extractSearchContext(email, searchTerm) {
const normalizedSearchTerm = searchTerm.toLowerCase();
const cleanBody = email.body.replace(/<[^>]*>/g, '');
const sentences = cleanBody.split(/[.!?。！？]+/);
// 検索語を含む文を探す
for (const sentence of sentences) {
if (sentence.toLowerCase().includes(normalizedSearchTerm)) {
// 文が長すぎる場合は検索語周辺を抽出
const trimmedSentence = sentence.trim();
if (trimmedSentence.length > 150) {
const index = trimmedSentence.toLowerCase().indexOf(normalizedSearchTerm);
const start = Math.max(0, index - 50);
const end = Math.min(trimmedSentence.length, index + searchTerm.length + 50);
return '...' + trimmedSentence.substring(start, end) + '...';
}
return trimmedSentence;
}
}
// 件名または送信者で一致した場合
if (email.subject.toLowerCase().includes(normalizedSearchTerm)) {
return `件名に一致: ${email.subject}`;
}
if (email.sender.toLowerCase().includes(normalizedSearchTerm)) {
return `送信者に一致: ${email.sender}`;
}
return '検索語を含むコンテキストが見つかりません';
}
static extractBodyPreview(body, maxLength = 200) {
// Remove HTML tags and excessive whitespace
const cleanBody = body
.replace(/<[^>]*>/g, '')
.replace(/\s+/g, ' ')
.trim();
if (cleanBody.length <= maxLength) {
return cleanBody;
}
return cleanBody.substring(0, maxLength) + '...';
}
static extractKeyPoints(body) {
const keyPoints = [];
const cleanBody = body.replace(/<[^>]*>/g, '').toLowerCase();
// Look for numbered lists
const numberedLists = cleanBody.match(/\d+\.\s+[^\n]+/g);
if (numberedLists) {
keyPoints.push(...numberedLists.slice(0, 10));
}
// Look for bullet points
const bulletPoints = cleanBody.match(/[•\-\*]\s+[^\n]+/g);
if (bulletPoints) {
keyPoints.push(...bulletPoints.slice(0, 10));
}
// Look for sentences with action words
const actionWords = ['please', 'request', 'need', 'urgent', 'important', 'deadline', 'meeting', 'call'];
const sentences = cleanBody.split(/[.!?]+/);
for (const sentence of sentences) {
for (const word of actionWords) {
if (sentence.includes(word) && sentence.length > 20) {
keyPoints.push(sentence.trim());
break;
}
}
if (keyPoints.length >= 5)
break;
}
return keyPoints.slice(0, 5);
}
static detectPriority(subject, body) {
const text = (subject + ' ' + body).toLowerCase();
const highPriorityWords = ['urgent', 'asap', 'emergency', 'critical', 'immediate', 'deadline'];
const mediumPriorityWords = ['important', 'please review', 'meeting', 'call'];
for (const word of highPriorityWords) {
if (text.includes(word))
return 'high';
}
for (const word of mediumPriorityWords) {
if (text.includes(word))
return 'medium';
}
return 'low';
}
static detectActionRequired(body) {
const text = body.toLowerCase();
const actionWords = [
'please', 'can you', 'could you', 'would you', 'need you to',
'respond', 'reply', 'confirm', 'approve', 'review', 'check',
'call', 'meeting', 'schedule', 'deadline', 'urgent'
];
return actionWords.some(word => text.includes(word));
}
static formatSummary(summary) {
return `
📧 **邮件摘要**
主题: ${summary.subject}
发件人: ${summary.sender}
接收时间: ${summary.receivedTime}
状态: ${summary.isRead ? '已读' : '未读'}
${summary.hasAttachments ? '📎 有附件' : ''}
优先级: ${summary.priority === 'high' ? '🔴 高' : summary.priority === 'medium' ? '🟡 中' : '🟢 低'}
${summary.actionRequired ? '⚠️ 需要回复或行动' : ''}
**内容预览:**
${summary.bodyPreview}
**关键点:**
${summary.keyPoints.length > 0 ? summary.keyPoints.map((point) => `• ${point}`).join('\n') : '无特殊关键点'}
`;
}
static formatMultipleSummaries(summaries) {
const unreadCount = summaries.filter(s => !s.isRead).length;
const highPriorityCount = summaries.filter(s => s.priority === 'high').length;
const actionRequiredCount = summaries.filter(s => s.actionRequired).length;
let result = `📊 **邮件总览**\n`;
result += `总计: ${summaries.length} 封邮件\n`;
result += `未读: ${unreadCount} 封\n`;
result += `高优先级: ${highPriorityCount} 封\n`;
result += `需要行动: ${actionRequiredCount} 封\n\n`;
result += `📋 **邮件列表:**\n`;
summaries.forEach((summary, index) => {
const priorityIcon = summary.priority === 'high' ? '🔴' : summary.priority === 'medium' ? '🟡' : '🟢';
const statusIcon = summary.isRead ? '✅' : '📬';
const actionIcon = summary.actionRequired ? '⚠️' : '';
result += `${index + 1}. ${statusIcon} ${priorityIcon} ${actionIcon} **${summary.subject}**\n`;
result += ` 发件人: ${summary.sender}\n`;
result += ` 时间: ${summary.receivedTime}\n`;
result += ` 预览: ${summary.bodyPreview}\n\n`;
});
return result;
}
/**
* 検索結果のフォーマット
* @param summaries 検索結果のサマリー配列
* @param searchTerm 検索語
* @returns フォーマットされた検索結果文字列
*/
static formatSearchResults(summaries, searchTerm) {
const unreadCount = summaries.filter(s => !s.isRead).length;
const highPriorityCount = summaries.filter(s => s.priority === 'high').length;
const actionRequiredCount = summaries.filter(s => s.actionRequired).length;
let result = `🔍 **検索結果: "${searchTerm}"**\n`;
result += `総計: ${summaries.length} 件\n`;
result += `未読: ${unreadCount} 件\n`;
result += `高優先級: ${highPriorityCount} 件\n`;
result += `需要行動: ${actionRequiredCount} 件\n\n`;
result += `📋 **検索結果一覧:**\n`;
summaries.forEach((summary, index) => {
const priorityIcon = summary.priority === 'high' ? '🔴' : summary.priority === 'medium' ? '🟡' : '🟢';
const statusIcon = summary.isRead ? '✅' : '📬';
const actionIcon = summary.actionRequired ? '⚠️' : '';
result += `${index + 1}. ${statusIcon} ${priorityIcon} ${actionIcon} **${summary.subject}**\n`;
result += ` 发件人: ${summary.sender}\n`;
result += ` 时间: ${summary.receivedTime}\n`;
result += ` 検索コンテキスト: ${summary.searchContext}\n`;
result += ` 预览: ${summary.bodyPreview}\n\n`;
});
return result;
}
}
