'use strict';

const BbPromise = require('bluebird');

module.exports = {
  getStackInfo() {
    // NOTE: this is the global gatheredData object which will be passed around
    this.gatheredData = {
      info: {
        functions: [],
        layers: [],
        endpoints: [],
        service: this.serverless.service.service,
        stage: this.provider.getStage(),
        region: this.provider.getRegion(),
        stack: this.provider.naming.getStackName(),
      },
      outputs: [],
    };

    const stackName = this.provider.naming.getStackName();

    // Get info from CloudFormation Outputs
    return this.provider
      .request('CloudFormation', 'describeStacks', { StackName: stackName })
      .then(result => {
        let outputs;

        if (result) {
          outputs = result.Stacks[0].Outputs;

          const serviceEndpointOutputRegex = this.provider.naming.getServiceEndpointRegex();

          // Outputs
          this.gatheredData.outputs = outputs;

          // Functions
          this.serverless.service.getAllFunctions().forEach(func => {
            const functionInfo = {};
            functionInfo.name = func;
            functionInfo.deployedName = this.serverless.service.getFunction(func).name;
            this.gatheredData.info.functions.push(functionInfo);
          });

          // Layers
          this.serverless.service.getAllLayers().forEach(layer => {
            const layerInfo = {};
            layerInfo.name = layer;
            const layerOutputId = this.provider.naming.getLambdaLayerOutputLogicalId(layer);
            for (const output of outputs) {
              if (output.OutputKey === layerOutputId) {
                layerInfo.arn = output.OutputValue;
                break;
              }
            }
            this.gatheredData.info.layers.push(layerInfo);
          });

          // CloudFront
          const cloudFrontDomainName = outputs.find(
            output =>
              output.OutputKey ===
              this.provider.naming.getCloudFrontDistributionDomainNameLogicalId()
          );
          if (cloudFrontDomainName) {
            this.gatheredData.info.cloudFront = cloudFrontDomainName.OutputValue;
          }

          // Endpoints
          outputs
            .filter(x => x.OutputKey.match(serviceEndpointOutputRegex))
            .forEach(x => {
              this.gatheredData.info.endpoints.push(x.OutputValue);
              if (
                this.serverless.service.deployment &&
                this.serverless.service.deployment.deploymentId
              ) {
                this.serverless.service.deployment.apiId = x.OutputValue.split('//')[1].split(
                  '.'
                )[0];
              }
            });
        }

        return BbPromise.resolve();
      });
  },
};
