import { executeAppBuilder, InvalidConfigurationError, log } from "builder-util"
import { S3Options } from "builder-util-runtime"
import { PublishContext } from ".."
import { BaseS3Publisher } from "./baseS3Publisher"

export class S3Publisher extends BaseS3Publisher {
  readonly providerName = "s3"

  constructor(
    context: PublishContext,
    private readonly info: S3Options
  ) {
    super(context, info)
  }

  static async checkAndResolveOptions(options: S3Options, channelFromAppVersion: string | null, errorIfCannot: boolean) {
    const bucket = options.bucket
    if (bucket == null) {
      throw new InvalidConfigurationError(`Please specify "bucket" for "s3" publish provider`)
    }

    if (options.endpoint == null && bucket.includes(".") && options.region == null) {
      // on dotted bucket names, we need to use a path-based endpoint URL. Path-based endpoint URLs need to include the region.
      try {
        options.region = await executeAppBuilder(["get-bucket-location", "--bucket", bucket])
      } catch (e: any) {
        if (errorIfCannot) {
          throw e
        } else {
          log.warn(`cannot compute region for bucket (required because on dotted bucket names, we need to use a path-based endpoint URL): ${e}`)
        }
      }
    }

    if (options.channel == null && channelFromAppVersion != null) {
      options.channel = channelFromAppVersion
    }

    if (options.endpoint != null && options.endpoint.endsWith("/")) {
      ;(options as any).endpoint = options.endpoint.slice(0, -1)
    }
  }

  protected getBucketName(): string {
    return this.info.bucket
  }

  protected configureS3Options(args: Array<string>): void {
    super.configureS3Options(args)

    if (this.info.endpoint != null) {
      args.push("--endpoint", this.info.endpoint)
    }
    if (this.info.region != null) {
      args.push("--region", this.info.region)
    }

    if (this.info.storageClass != null) {
      args.push("--storageClass", this.info.storageClass)
    }
    if (this.info.encryption != null) {
      args.push("--encryption", this.info.encryption)
    }

    if (this.info.forcePathStyle != null) {
      args.push("--forcePathStyle", this.info.forcePathStyle ? "true" : "false")
    }
  }

  toString() {
    const result = super.toString()
    const endpoint = this.info.endpoint
    if (endpoint != null) {
      return result.substring(0, result.length - 1) + `, endpoint: ${endpoint})`
    }
    return result
  }
}