import { existsSync } from "node:fs";
import { mkdir, writeFile } from "node:fs/promises";
import { join } from "node:path";
import { CHANGES_DIR, ARCHIVE_DIR, RUNE_DIR, CONFIG_FILE } from "../types.ts";
import { injectOpenCode } from "../adapters/opencode.ts";
import { injectClaudeCode } from "../adapters/claude-code.ts";
import { CommandError } from "../cli/errors.ts";

const SUPPORTED_TOOLS: Record<string, (root: string) => Promise<void>> = {
  opencode: injectOpenCode,
  "claude-code": injectClaudeCode,
};

export async function runInit(
  projectRoot: string,
  tools: string[],
): Promise<void> {
  for (const tool of tools) {
    if (!SUPPORTED_TOOLS[tool]) {
      throw new CommandError(`不支持的工具: ${tool}`, {
        hint: `支持的工具: ${Object.keys(SUPPORTED_TOOLS).join(", ")}`,
      });
    }
  }

  const runeDir = join(projectRoot, RUNE_DIR);
  await mkdir(runeDir, { recursive: true });
  await mkdir(join(runeDir, CHANGES_DIR), { recursive: true });
  await mkdir(join(runeDir, ARCHIVE_DIR), { recursive: true });

  const configPath = join(runeDir, CONFIG_FILE);
  if (!existsSync(configPath)) {
    await writeFile(configPath, "stages: {}\n", "utf-8");
  }

  for (const tool of tools) {
    await SUPPORTED_TOOLS[tool](projectRoot);
  }
}