code.ts

interface WritingGuidelineRule {
  pattern: RegExp;
  message: string;
}

const writingGuidelines: WritingGuidelineRule[] = [
  {
    pattern: /[ｦ-ﾟ]/g,
    message: "半角カナは使用せず、全角カタカナを使用してください"
  },
  {
    pattern: /[\uD800-\uDBFF][\uDC00-\uDFFF]/g,
    message: "サロゲート文字（絵文字など）は使用しないでください"
  }
];

function checkGuidelines(text: string): string[] {
  const violations: string[] = [];
  
  for (const rule of writingGuidelines) {
    if (rule.pattern.test(text)) {
      violations.push(rule.message);
    }
  }
  
  return violations;
}

figma.showUI(__html__, { 
  width: 300, 
  height: 400
});

figma.ui.onmessage = (msg: { type: string }) => {
  if (msg.type === 'count-text') {
    const selection = figma.currentPage.selection;
    
    if (selection.length === 0) {
      figma.ui.postMessage({
        type: 'count-result',
        total: 0,
        details: []
      });
      return;
    }

    // テキストノードのみを事前にフィルタリング
    const textNodes = selection.filter(node => node.type === "TEXT") as TextNode[];
    
    if (textNodes.length === 0) {
      figma.ui.postMessage({
        type: 'count-result',
        total: 0,
        details: []
      });
      return;
    }

    let totalCount = 0;
    const results: { 
      name: string, 
      count: number,
      halfWidthSpaces: number,
      fullWidthSpaces: number,
      lineBreaks: number,
      violations: string[]
    }[] = [];

    // テキストノードのみを効率的に処理
    for (const textNode of textNodes) {
      const characters = textNode.characters;
      const count = characters.length;
      
      // 一度の文字列走査で全ての情報を収集
      let halfWidthSpaces = 0;
      let fullWidthSpaces = 0;
      let lineBreaks = 0;
      
      for (let i = 0; i < count; i++) {
        const char = characters[i];
        if (char === ' ') halfWidthSpaces++;
        else if (char === '　') fullWidthSpaces++;
        else if (char === '\n') lineBreaks++;
      }
      
      // ガイドラインチェックを実行
      const violations = checkGuidelines(characters);
      
      totalCount += count;
      results.push({
        name: textNode.name || "無名のテキスト",
        count: count,
        halfWidthSpaces: halfWidthSpaces,
        fullWidthSpaces: fullWidthSpaces,
        lineBreaks: lineBreaks,
        violations: violations
      });
    }

    // UIに結果を送信
    figma.ui.postMessage({
      type: 'count-result',
      total: totalCount,
      details: results
    });
  }
};