String.prototype.replaceLast = function (what, replacement) {
    var pcs = this.split(what);
    var lastPc = pcs.pop();
    return pcs.join(what) + replacement + lastPc;
}

async function getContent(url) {
  const res = await fetch(url.concat('/download'));
  return res.text();
}

async function migrateDocument(oldUrl, newUrl) {
  // get content of old pad
  var content = await getContent(oldUrl);
  
  // replace URLs
  content = content.replaceAll(new URL(oldUrl).hostname, new URL(newUrl).hostname);
  
  // visit new pad url (not possible via post api request because pad may already exists)
  // Caution: Content of new pad url will be overwritten!
  // Caution: History will not be moved to new pad url
  cy.visit(newUrl.concat('?edit'));
  cy.window().then((win) => {
  
  	// Write Content
  	cy.get('.CodeMirror-scroll').type('{ctrl}a{backspace}');
  	cy.get('.CodeMirror-scroll').type(content);
  	
  	// Visit old pad and replace content
  	cy.visit(oldUrl);
   	cy.get('#view-mode-toggle-edit').click({force: true});
  	cy.get('.CodeMirror-scroll').type('{ctrl}a{backspace}');
  	cy.get('.CodeMirror-scroll').type(`# 301 Pad moved{enter}=> [${newUrl}](${newUrl})`);
  	
  })
  
}

describe('Migrate document', () => {
	it('passes', async () => {
  
    	// Read list of pads to migrate
    	cy.fixture('pads').then(async(pads) => {

	    	if(pads.length === 0) {
    			console.log("Didn't find any pad urls to migrate");
    		}
    	
    		for (const pad of pads) {
   				await migrateDocument(pad.oldUrl, pad.newUrl);
	   		}  	

    	})
	
	})
})