// Copyright 2017 AJ Jordan, AGPLv3+

'use strict';

const parse = require('./parse'),

validate = require('./validate'),

labeler = require('./labeler'),

helptext = require('./helptext'),

_ = require('lodash');

// We do this outside the event handler to avoid setting up and tearing down this object each time a hook is received

const botStartDate = new Date('2017-09-25');

// TODO make this share more with newissue.js?

module.exports = function(robot, alexa) {

return async context => {

robot.log('Issue #' + context.payload.issue.number + ' edited; responding.');

// Check if the "issue" is really a PR

// I can't really tell if GitHub will ever send us something like this, honestly... but bettter safe than sorry.

if (_.has(context.payload.issue, 'pull_request')) {

robot.log('Issue is a Pull Request; aborting.');

return;

}

const createdAt = new Date(context.payload.issue.created_at);

if (createdAt <= botStartDate) {

robot.log('Ignoring event for a legacy, pre-bot issue.');

return;

}

const data = parse(context.payload.issue.body);

// Check if the data is problematic

if (data instanceof Error) {

// Dumb `switch` statement cases aren't technically blocks so saying `const params` in both of them causes redeclaration errors

let params;

switch (data.message) {

case 'invalid type':

params = context.issue({body: 'Sorry, I still couldn\'t understand the type of issue you specified. Did you look at the [issue template](https://github.com/EFForg/https-everywhere/blob/master/.github/ISSUE_TEMPLATE.md)?\n\nPlease try again.' + helptext});

return context.github.issues.createComment(params);

case 'multiple types':

params = context.issue({body: 'Sorry, but I\'m still seeing more than one type. Can you edit your issue and delete all but one of the types in your issue?' + helptext});

return context.github.issues.createComment(params);

case 'no type':

params = context.issue({body: 'I still don\'t see the type of issue in your description. Can you edit your issue to add this information (perhaps referring to the [issue template](https://github.com/EFForg/https-everywhere/blob/master/.github/ISSUE_TEMPLATE.md)?)\n\nAll I need is `Type: <type>` on its own line in the issue body. For example, `Type: new ruleset`. The issue template has a list of types I can understand.' + helptext});

return context.github.issues.createComment(params);

case 'null description':

params = context.issue({body: 'I still don\'t see any text in your description - please edit it to use the [issue template](https://github.com/EFForg/https-everywhere/blob/master/.github/ISSUE_TEMPLATE.md). Thank you!' + helptext});

return context.github.issues.createComment(params);

default:

throw data;

}

}

const problems = validate(data);

if (problems.length === 0) {

// User submission is OK

let commentedBefore = false;

// This won't work if the bot comments success past 100 comments

// but since this will probably never happen, who cares. Also,

// the bot was originally put into production late September, so

// only ask for comments after then.

//

// XXX handle the user screwing up, then fixing it (and getting

// the success comment), then screwing up again

const _allComments = await context.github.issues.getComments(context.issue({

per_page: 100, // eslint-disable-line camelcase

since: '2017-09-25'

}));

const allComments = _allComments.data;

allComments.forEach(comment => {

// 'Your edit helped me out' is here to match legacy comments

// before this conditional was put in place

if (comment.body.includes('HELPED_COMMENT_POSTED')

|| comment.body.includes('Your edit helped me out')) {

commentedBefore = true;

}

});

if (commentedBefore) return;

const params = context.issue({body: 'Thanks! Your edit helped me out. I\'ll take it from here now. <!-- HELPED_COMMENT_POSTED -->'});

await context.github.issues.createComment(params);

return labeler(context, data, alexa);

} else {

// Submit a comment telling them what the issues were

let comment = 'Thanks for editing!\n\n';

comment += 'I\'m sorry, but I still couldn\'t understand your submission. ';

comment += 'Here are the problems I ran into this time:\n\n';

problems.forEach(problem => comment += ` * ${problem}\n`);

comment += '\nIf you edit your issue again, I\'ll try again and report back if I have problems again.';

comment += helptext

const params = context.issue({body: comment});

return context.github.issues.createComment(params);

}

};

};