const path = require('path');
const fs = require('fs');

/*/ SVN server setup
https://computingforgeeks.com/how-to-install-svn-server-on-ubuntu-debian/
https://tecadmin.net/install-subversion-server-on-ubuntu/
/*/

class Svn {

  constructor(script) {
    this.script = script;
  }

  getErrorDesc(vars) {
    const vals = vars.map(v => {
      return `${v}: ${this.script.env[v]}`
    }).join(', ');
    return `One or more environmet variables were not defined: ${vals}`;
  }

  checkout() {
    const origin = this.script.env.TLN_SVN_ORIGIN;
    const subPath = this.script.env.TLN_SVN_PATH;
    const user = this.script.env.TLN_SVN_USER;
    const dest = this.script.env.TLN_SVN_DEST;
    if (origin && user) {
      let url = origin;
      if (subPath) {
        url = [url, subPath].join('/');
      }
      this.script.set([
      `svn checkout --username ${user} ${url} ${dest}`
      ]);
    } else {
      this.script.logger.error(this.getErrorDesc(['TLN_SVN_ORIGIN', 'TLN_SVN_USER', 'TLN_SVN_DEST']));
    }
  }
  
  createRepo() {
    const name = this.script.env.TLN_SVN_NAME;
    if (name) {
      this.script.set([
        `sudo svnadmin create /var/lib/svn/${name}`,
        `sudo chown -R www-data:www-data /var/lib/svn/${name}`
      ]);
    } else {
      this.script.logger.error(this.getErrorDesc(['TLN_SVN_NAME']));
    }
  }

}

module.exports = {
  tags: async (tln) => [],
  options: async (tln, args) => {
    args
      .prefix('TLN_SVN')
      .option('origin', { describe: 'Repository origin url', default: null, type: 'string' })
      .option('user', { describe: 'SVN user name', default: null, type: 'string' })
      .option('path', { describe: 'Subpath inside repository', default: null, type: 'string' })
      .option('dest', { describe: 'Checkout into folder(s)', default: '.', type: 'string' })

      .option('name', { describe: 'Repository name', default: null, type: 'string' })
    ;
  },
  env: async (tln, env) => {},
  dotenvs: async (tln) => [],
  inherits: async (tln) => [],
  depends: async (tln) => [],
  steps: async (tln) => [
    {
      id: 'create-repo',
      desc: 'Create new SVN repository',
      builder: async (tln, script) => (new Svn(script)).createRepo()
    },
    {
      id: 'checkout',
      desc: 'Checkout repository',
      builder: async (tln, script) => (new Svn(script)).checkout()
    }
  ],
  components: async (tln) => []
}