#!/usr/bin/env node

import fs from 'fs'
import path from 'path'
import { fileURLToPath } from 'url'

const __filename = fileURLToPath(import.meta.url)
const __dirname = path.dirname(__filename)

interface ApiMethodParam {
  name: string
  type: string
  description: string
  optional: boolean
}

interface ApiMethod {
  name: string
  description: string
  return: string
  accessLevel: string
  params: ApiMethodParam[]
}

interface ApiModule {
  name: string
  methods: ApiMethod[]
}

interface ApiSpec {
  modules: ApiModule[]
  types: any[]
}

function generateMethod(method: ApiMethod): string {
  const sortedParams = [...method.params].sort((a, b) => {
    if (a.optional && !b.optional) return 1
    if (!a.optional && b.optional) return -1
    return 0
  })

  const params = sortedParams
    .map((param) => {
      const optional = param.optional ? '?' : ''
      return `${param.name}${optional}: ${param.type}`
    })
    .join(', ')

  const callParams = method.params.map((param) => `${param.name}: ${param.name}`).join(', ')

  return `
    /**
     * @description ${method.description}
${sortedParams.map((param) => `     * @param ${param.name} ${param.description}`).join('\n')}
     * @return ${method.return}
     */
    async ${method.name}(${params}): Promise<${method.return}> {
        return this.call("${method.name}"${callParams ? ', {' + callParams + '}' : ''});
    }`
}

function generateModule(module: ApiModule): string {
  const className = `${module.name}Module`
  const methods = module.methods.map(generateMethod).join('\n')

  return `export class ${className} extends RpcModuleBase {
    constructor(client: RpcClientBase) {
        super(client, "${module.name}");
    }${methods}
}`
}

function generateClient(spec: ApiSpec): string {
  const modules = spec.modules
    .map((module) => {
      const moduleName = module.name
      const className = `${module.name}Module`
      return `    public ${moduleName}: ${className};`
    })
    .join('\n')

  const initializations = spec.modules
    .map((module) => {
      const moduleName = module.name
      const className = `${module.name}Module`
      return `        this.${moduleName} = new ${className}(this);`
    })
    .join('\n')

  const moduleClasses = spec.modules.map(generateModule).join('\n\n')

  return `import {RpcClientBase} from "@/api/RpcClientBase.ts";
import {RpcModuleBase} from "@/api/RpcModuleBase.ts";

export class RpcClient extends RpcClientBase {${modules}

    constructor(baseUrl: string) {
        super(baseUrl);
${initializations}
    }
}

${moduleClasses}`
}

function main() {
  const specPath = path.resolve(__dirname, '../../../api.spec.json')
  const outputPath = path.resolve(__dirname, '../src/generated/RpcClient.ts')

  console.log('🚀 Generating RPC client...')

  try {
    if (!fs.existsSync(specPath)) {
      throw new Error(`API spec file not found: ${specPath}`)
    }

    const specContent = fs.readFileSync(specPath, 'utf-8')
    const spec: ApiSpec = JSON.parse(specContent)

    const clientCode = generateClient(spec)

    const outputDir = path.dirname(outputPath)
    if (!fs.existsSync(outputDir)) {
      fs.mkdirSync(outputDir, { recursive: true })
    }

    fs.writeFileSync(outputPath, clientCode)
    console.log(`✅ RPC client generated successfully: ${outputPath}`)
    console.log(`📋 Generated ${spec.modules.length} API modules`)
  } catch (error) {
    console.error('❌ Error generating RPC client:', error)
    process.exit(1)
  }
}

if (import.meta.url === `file://${process.argv[1]}`) {
  main()
}

export { main as generateClient }