feat: 提示词拼装器及测试

src/core/assembler.ts

@@ -0,0 +1,102 @@
+import { existsSync } from "node:fs";
+import { readFile } from "node:fs/promises";
+import { join } from "node:path";
+import type { RuneConfig } from "../types.ts";
+import { getChangeDir } from "./config.ts";
+import { parseTasks } from "./task-parser.ts";
+
+export function assembleDiscussPrompt(config: RuneConfig): string {
+  const discuss = config.stages.discuss;
+  if (!discuss) throw new Error("discuss 阶段未配置");
+  return discuss.prompt;
+}
+
+export async function assemblePlanPrompt(
+  config: RuneConfig,
+  projectRoot: string,
+  changeName: string,
+): Promise<string> {
+  const plan = config.stages.plan;
+  if (!plan) throw new Error("plan 阶段未配置");
+
+  const changeDir = getChangeDir(projectRoot, changeName);
+  const parts: string[] = [];
+
+  parts.push(`# 规划阶段：${changeName}\n`);
+  parts.push("请为当前变更生成以下文档：\n");
+
+  for (const doc of plan.documents) {
+    parts.push(`## 文档：${doc.name}.md`);
+    parts.push(doc.prompt);
+
+    const docPath = join(changeDir, `${doc.name}.md`);
+    if (existsSync(docPath)) {
+      const existing = await readFile(docPath, "utf-8");
+      parts.push(`\n### 已有内容（请在此基础上修订）：\n${existing}`);
+    }
+
+    if (doc.template) {
+      const rendered = doc.template.replace(/\{\{change-name\}\}/g, changeName);
+      parts.push(`\n### 格式模板：\n${rendered}`);
+    }
+
+    parts.push("");
+  }
+
+  parts.push(`请将文档写入目录：${changeDir}`);
+  return parts.join("\n");
+}
+
+export async function assembleBuildPrompt(
+  config: RuneConfig,
+  projectRoot: string,
+  changeName: string,
+): Promise<string> {
+  const build = config.stages.build;
+  if (!build) throw new Error("build 阶段未配置");
+
+  const changeDir = getChangeDir(projectRoot, changeName);
+  const taskPath = join(changeDir, "task.md");
+
+  let taskContent: string;
+  try {
+    taskContent = await readFile(taskPath, "utf-8");
+  } catch {
+    throw new Error(`task.md not found in ${changeDir}`);
+  }
+
+  const tasks = parseTasks(taskContent);
+  const pendingTasks = tasks.filter((t) => !t.checked);
+
+  if (pendingTasks.length === 0) {
+    return `所有任务已完成。变更 "${changeName}" 可以归档。`;
+  }
+
+  const parts: string[] = [];
+  parts.push(`# 构建阶段：${changeName}\n`);
+  parts.push(build.prompt);
+  parts.push(`\n## 任务列表\n`);
+  parts.push(taskContent);
+  parts.push(`\n## 待执行任务（共 ${pendingTasks.length} 项）`);
+  for (const task of pendingTasks) {
+    parts.push(`- [ ] ${task.text}`);
+  }
+  parts.push(
+    `\n请从第一个待执行任务开始。完成后更新 ${taskPath} 中的 checkbox。`,
+  );
+
+  return parts.join("\n");
+}
+
+export function assembleArchivePrompt(
+  config: RuneConfig,
+  changeName: string,
+): string {
+  const archive = config.stages.archive;
+  if (!archive) throw new Error("archive 阶段未配置");
+
+  const parts: string[] = [];
+  parts.push(`# 归档阶段：${changeName}\n`);
+  parts.push(archive.prompt);
+  return parts.join("\n");
+}