name: Append content to Artifact
description: 'Allow the user to append content to an existing artifact'

inputs:
  artifact-name:
    description: 'The name of the artifact'
    required: true
    type: string
  file-name:
    description: 'The name of the file with extension created in the artifact'
    required: true
    type: string
  content:
    description: 'The content to append'
    type: string
    default: ""

runs:
  using: "composite"

  steps:
    - run: echo "Artifact Append"
      shell: bash
    - name: Download artifact
      uses: actions/download-artifact@v3
      with:
        name: ${{ inputs.artifact-name }}
    - run: ls
      shell: bash
    - name: Append content
      uses: actions/github-script@v6
      env:
        contentFile: ${{ inputs.content }}
        fileName: ${{ inputs.file-name }}
      with:
        script: |
          const fs = require('fs');

          const affectedLib = process.env.contentFile;
          const fileName = process.env.fileName;
          core.info(`Input Filename: ${fileName}`);
          core.info(`Input content: ${affectedLib}`);

          const content = read(fileName)
          core.info(`File content: ${content}`);
          appendContent(content, affectedLib);

          function read(filename) {
            try {
              const contentFile = fs.readFileSync(filename, 'utf8').replace('\n','');
              return contentFile;
            } catch (err) {
              core.error(err);
            }
          }

          function write(filename, content) {
            try {
              fs.writeFileSync(filename, content);
            } catch (err) {
              core.error(err);
            }
          }

          function appendContent(content, append) {
            let changedContent;
            const libs = content.split(' ');
            if (libs?.length>0) {
              if (libs.length === 1 && libs[0] === '') {
                libs[0] = append;
                changedContent = libs[0];
              }
              else if (!libs.includes(append)) {
                libs.push(append);
                changedContent = libs.join(' ');
              } else {
                core.info(`Lib ${append} already affected`);
              }
            }
            if (changedContent != undefined){
              core.info(`File content append: ${changedContent}`)
              write(fileName, changedContent);
            }
          }
    - name: Upload artifact
      uses: actions/upload-artifact@v3
      with:
        name: ${{ inputs.artifact-name }}
        path: ${{ inputs.file-name }}