import * as fs from 'fs/promises'
import { appLogger } from './logger'

export async function readJsonFile<T>(filePath: string): Promise<T> {
  try {
    const fileContent = await fs.readFile(filePath, 'utf-8')
    return JSON.parse(fileContent) as T
  } catch (error) {
    appLogger.error(`Error reading JSON file: ${error instanceof Error ? error.message : String(error)}`)
    throw error
  }
}

export async function writeJsonFile<T>(filePath: string, data: T): Promise<void> {
  try {
    const jsonString = JSON.stringify(data, null, 2)
    await fs.writeFile(filePath, jsonString, 'utf-8')
  } catch (error) {
    appLogger.error(`Error writing JSON file: ${error instanceof Error ? error.message : String(error)}`)
    throw error
  }
}

export async function readJsonValue<T>(filePath: string, paramPath: string): Promise<T> {
  try {
    const jsonContent = await readJsonFile<any>(filePath)
    const paramValue = paramPath.split('.').reduce((obj, key) => obj && obj[key], jsonContent)

    if (paramValue === undefined) {
      throw new Error(`Parameter ${paramPath} not found in the JSON file`)
    }

    return paramValue as T
  } catch (error) {
    appLogger.error(`Error reading JSON parameter: ${error instanceof Error ? error.message : String(error)}`)
    throw error
  }
}

export async function setJsonValue<T>(filePath: string, key: string, value: any): Promise<void> {
  try {
    const data = await readJsonFile<T>(filePath)
    const updatedData = { ...data, [key]: value }
    await writeJsonFile(filePath, updatedData)
  } catch (error) {
    appLogger.error(`Error setting JSON value: ${error instanceof Error ? error.message : String(error)}`)
    throw error
  }
}