import type { ImportDeclaration } from '../types'
import type { types } from 'recast'
import type { Config } from '../config'

export interface TransformOptions {
  source: string
  ctx: TransformContext
  plugins?: Array<TransformPlugin>
}

export type TransformResult =
  | {
      result: 'not-modified'
      exports: Array<string>
    }
  | {
      result: 'modified'
      output: string
      exports: Array<string>
    }
  | {
      result: 'error'
      error?: any
    }

export interface TransformImportsConfig {
  banned?: Array<ImportDeclaration>
  required?: Array<ImportDeclaration>
}
export interface TransformPlugin {
  name: string
  exportName: string
  imports: (ctx: TransformContext) => TransformImportsConfig
  /**
   * Called after the export is found in the AST.
   * @returns true if the plugin modified the AST, false otherwise
   */
  onExportFound: (opts: {
    decl: types.namedTypes.VariableDeclarator
    ctx: TransformContext
  }) => boolean
}

export interface TransformContext {
  target: Config['target']
  routeId: string
  lazy: boolean
  verboseFileRoutes: boolean
  preferredQuote?: '"' | "'"
}