import type { ConfigFile } from "./types";
import { existsSync, readFileSync } from "node:fs";
import { cwd } from "node:process";
import chalk from "chalk";
import findRoot from "find-root";
import { isTruthy } from "inferred-types/runtime";
import { join } from "pathe";
import { isConfigFile } from "./type-guards";
import { fail, success } from "./utils";
import "dotenv/config";

export const IGNORE_INVALID_CERT: boolean = !!isTruthy(process.env.IGNORE_INVALID_CERT);

export const EXT_TO_LANG = {
  "cpp": "cpp",
  "c": "c",
  "ts": "ts",
  "js": "js",
  "py": "py",
  "sh": "sh",
  "bash": "bash",
  "php": "php",
  "rs": "rust",
  "json": "json",
  "txt": "txt",
  "toml": "toml",
  "yaml": "yaml",
  "yml": "yaml",
  "md": "md",
  "lua": "lua",
  "": "text",
} as const;

export const ROOT = findRoot(cwd()) || cwd();

export const CONFIG_FILE = join(ROOT, "/.prompt.json");

let _CONFIG: ConfigFile | undefined;

if (existsSync(CONFIG_FILE)) {
  try {
    const data = readFileSync(CONFIG_FILE, "utf-8");
    const parsed = JSON.parse(data);
    if (isConfigFile(parsed)) {
      success(`using the config file at ${chalk.blue(CONFIG_FILE)}`);
      _CONFIG = parsed;
    }
    else {
      _CONFIG = undefined;
      fail(`a config file was found at ${chalk.blue(CONFIG_FILE)} and was ${chalk.italic("parsed")} but appears to be of the wrong format.`);
    }
  }
  catch (err) {
    _CONFIG = undefined;
    fail(`a config file was found at ${chalk.blue(CONFIG_FILE)} but it could not be parsed into a configuration file!\n`, err);
  }
}

export const CONFIG = _CONFIG;

/**
 * The directories to look for **prompt** files in
 */
export const PROMPTS_DIR = [
  ...(
    CONFIG
      ? CONFIG.promptDirs ? CONFIG.promptDirs : [`${ROOT}/prompts`]
      : [`${ROOT}/prompts`]
  ),
  ...(
    process.env.PROMPTS
      ? process.env.PROMPTS.split(":")
      : []
  ),
] as const;

export const PROMPTS_GLOB = PROMPTS_DIR.map(i => join(i, `/**/*.(md|txt)`));

export const CODE_PATHS = [
  ...(
    CONFIG && CONFIG.codePath
      ? CONFIG.codePath
      : [
          `${ROOT}/src`,
          `${ROOT}/test`,
          `${ROOT}/tests`,
        ]
  ),
  ...(
    process.env.CODE
      ? process.env.CODE.split(":")
      : []
  ),
];