plugin.rb

# name: CWHQ-Discourse-Bot
# about: This plugin adds extra functionality to the @system user on a Discourse forum.
# version: 1.9.0
# authors: Qursch, bronze0202, linuxmasters, sep208, Astr0clad, usrbinsam, daniel-schroeder-dev, sharpkeen, shriyash-shukla
# url: https://github.com/codewizardshq/CWHQ-Discourse-Bot

require 'date'

courses = Hash.new
courses = {
    11 => "https://scratch.mit.edu/projects/00000000/",
    57 => "https://scratch.mit.edu/projects/00000000/",
    85 => "e13_text_prog_00",
    36 => "e13_real_prog_00",
    37 => "e14_minecraft_00",
    90 => "e20_prog_fundamentals_00",
    45 => "e21_prog_concepts_00",
    31 => "e22_wd1_00",
    58 => "e23_wd2_00",
    46 => "e24_python_game_dev_00",
    13 => "m112_intro_prog_py_00",
    84 => "m12_python_beyond_basics_00",
    14 => "m13_html_css_00",
    15 => "m13_js_00",
    16 => "M14_vr_00",
    89 => "m21_resp_web_dev_00",
    17 => "m21_ui_00",
    18 => "m22_database_00",
    47 => "m23_api_00",
    48 => "m24_omg_00",
    20 => "h112_intro_python_00",
    21 => "h12_web_dev_00",
    22 => "h13_ui_00",
    73 => "h14_capstone_00",
    23 => "h21_api_00",
    49 => "h22_web_app_00",
    74 => "h23_css_framework_00",
    52 => "h24_capstone_00",
    50 => "h31_mvc_00",
    51 => "h32_orm_00",
    75 => "h33_devops_00",
    76 => "h34_capstone_00"
}

def get_link(id, username, hash)
    if id == 11 || id == 57
        return "`https://scratch.mit.edu/projects/00000000`" 
    else
        if !hash[id].nil? && hash[id] == "m112_intro_prog_py_00"
            return "`https://#{username}.codewizardshq.com/#{hash[id]}/project` or `https://#{username}.codewizardshq.com/#{hash[id]}/project-folder`"
        elsif !hash[id].nil?
            return "`https://#{username}.codewizardshq.com/#{hash[id]}/project`"
        end
    end
    return false
end

def create_post(topicId, text)
    post = PostCreator.create(
        Discourse.system_user,
        skip_validations: true,
        topic_id: topicId,
        raw: text
    )
    unless post.nil?
        post.save(validate: false)
    end
end

def closeTopic(id, message)
    topic = Topic.find_by(id: id)
    topic.update_status("closed", true, Discourse.system_user, { message: message })
    author_username = topic.user.username
    send_pm_to_author(author_username, id, message)
end

def check_title(title)
    if title.downcase.include?("codewizardshq.com") || title.downcase.include?("scratch.mit.edu")
        return true
    else
        return false
    end
end

def check_all_link_types(text)
    if (text.include?("codewizardshq.com") && !text.include?("/edit")) || (text.include?("cwhq-apps") || text.include?("scratch.mit.edu"))
        return true
    end
end

def log_command(command, link, name)
    log_topic_id = 11303
    text = "@#{name} #{command}:<br>#{link}"
    create_post(log_topic_id, text)
end

def send_pm(title, text, user)
    message = PostCreator.create!(
        Discourse.system_user,
        title: title,
        raw: text,
        archetype: Archetype.private_message,
        target_usernames: user,
        skip_validations: true
    )
end

def send_pm_to_author(author_username, topic_id, message)
    title = "Your topic (ID: #{topic_id}) has been closed"
    text = "Hello @#{author_username},\n\nYour topic (ID: #{topic_id}) has been closed. Reason: #{message}\n\nIf you have any questions or need further assistance, feel free to reach out to us.\n\nBest regards,\nThe CodeWizardsHQ Team"
    send_pm(title, text, author_username)
end

after_initialize do
    DiscourseEvent.on(:topic_created) do |topic| 
        newTopic = Post.find_by(topic_id: topic.id, post_number: 1)
        topicRaw = newTopic.raw
        lookFor = topic.user.username + ".codewizardshq.com"
        #link = get_link(topic.category_id, topic.user.username, courses)
        link = false
        if link then
            if topicRaw.downcase.include?(lookFor + "/edit") then
                text = "Hello @#{topic.user.username}, it appears that the link you provided goes to the editor, and not your project. Please open your project and use the link from that tab. This may look like " + link + "."
                create_post(topic.id, text)
                log_command("received an editor link message", "https://forum.codewizardshq.com/t/#{topic.topic_id}", topic.user.username)
            elsif !topicRaw.downcase.include?(lookFor) && !topicRaw.downcase.include?("cwhq-apps.com") then
                text = "Hello @#{topic.user.username}, it appears that you did not provide a link to your project. In order to receive the best help, please edit your topic to contain a link to your project. This may look like " + link + "."
                create_post(topic.id, text)
                log_command("received a missing link message", "https://forum.codewizardshq.com/t/#{topic.topic_id}", topic.user.username)
            end
        end

        topic_title = topic.title
        
        if check_title(topic_title) then
            text = "Hello @#{topic.user.username}, it appears you provided a link in your topic's title. Please change the title of this topic to something that clearly explains what the topic is about. This will help other forum users know what you want to show or get help with. You can edit your topic title by pressing the pencil icon next to the current one. Be sure to put the link in the main body of your post."
            if topicRaw.downcase.include?(lookFor) || topicRaw.downcase.include?("scratch.mit.edu") then
                create_post(topic.id, text)
                log_command("received a link in topic title message", "https://forum.codewizardshq.com/t/#{topic.topic_id}", topic.user.username)
            else
                create_post(topic.id, text)
                log_command("received a link in topic title message",  "https://forum.codewizardshq.com/t/#{topic.topic_id}", topic.user.username)
            end
        end
    end

    DiscourseEvent.on(:post_created) do |post|
        if post.post_number != 1 && post.user_id != -1 then
            raw = post.raw
            oPost = Post.find_by(topic_id: post.topic_id, post_number: 1)
            group = Group.find_by(id: post.user.primary_group_id)
            helpLinks = "
            [Forum Videos](https://forum.codewizardshq.com/t/informational-videos/8662)
            [Rules Of The Forum](https://forum.codewizardshq.com/t/rules-of-the-codewizardshq-community-forum/43)
            [Create Good Questions And Answers](https://forum.codewizardshq.com/t/create-good-questions-and-answers/69)
            [Forum Guide](https://forum.codewizardshq.com/t/forum-new-user-guide/47)
            [Meet Forum Helpers](https://forum.codewizardshq.com/t/meet-the-forum-helpers/5474)
            [System Documentation](https://forum.codewizardshq.com/t/system-add-on-plugin-documentation/8742)
            [Understanding Trust Levels](https://blog.discourse.org/2018/06/understanding-discourse-trust-levels/)
            [Forum Information Category](https://forum.codewizardshq.com/c/official/information/69)"
            if raw[0, 7].downcase == "@system" then
                if raw[8, 5] == "close" then
                    if (!post.user.primary_group_id.nil? && group.name == "Helpers") || (oPost.user.username == post.user.username && !courses[post.topic.category_id].nil?) then
                        text = "Closed by @#{post.user.username}: #{raw[14..raw.length]}"
                        if oPost.user.username == post.user.username then
                            text = "Closed by topic creator: #{raw[14..raw.length]}"
                        end
                        closeTopic(post.topic_id, text)
                        log_command("closed a topic", "https://forum.codewizardshq.com/t/#{post.topic_id}", post.user.username)
                        PostDestroyer.new(Discourse.system_user, post).destroy
                    end
                elsif raw[8, 11] == "code_sample" then
                    text = "Hello @#{oPost.user.username}, it appears that you have not posted a sample of your code or your code sample is not formatted properly. In order to receive better assistance, please refer to this link for guidance on posting your code properly. Thanks. [Code Sample Guide](https://forum.codewizardshq.com/t/how-to-post-code-samples/21423/1)"
                    create_post(post.topic_id, text)
                    log_command("received code_sample message", "https://forum.codewizardshq.com/t/#{post.topic_id}", oPost.user.username)
                    PostDestroyer.new(Discourse.system_user, post).destroy
                elsif raw[8,12] == "project_link" then
                    text = "Hello @#{oPost.user.username}, it appears that you have not posted a link to your project. In order to receive further or better assistance, please refer to this link as guidance to posting a link to your project. Thanks. [Project Link Guide](https://forum.codewizardshq.com/t/how-to-post-project-links/21426/1)"
                    create_post(post.topic_id, text)
                    log_command("received project_link message", "https://forum.codewizardshq.com/t/#{post.topic_id}", oPost.user.username)
                    PostDestroyer.new(Discourse.system_user, post).destroy
                elsif raw[8,13] == "code_sample_and_project_link" then
                    text = "Hello @#{oPost.user.username}, it appears that your code sample has not been posted or formatted properly and a link to your project was not provided. Please refer to these topics as guidance for posting your code sample in the correct format and adding a link to your project. [Code Sample Guide](https://forum.codewizardshq.com/t/how-to-post-code-samples/21423/1) and [Project Link Guide](https://forum.codewizardshq.com/t/how-to-post-project-links/21426/1). Thanks."
                    create_post(post.topic_id, text)
                    log_command("received project_link message", "https://forum.codewizardshq.com/t/#{post.topic_id}", oPost.user.username)
                    PostDestroyer.new(Discourse.system_user, post).destroy
                elsif raw[8,8] == "add_both" then
                    text = "Hello @#{oPost.user.username}, please refer to these topics for posting the link to your project and pasting your code. [Code Sample Guide](https://forum.codewizardshq.com/t/how-to-post-code-samples/21423/1) and [Project Link Guide](https://forum.codewizardshq.com/t/how-to-post-project-links/21426/1). Thanks."
                    create_post(post.topic_id, text)
                    log_command("received project_link and code_sample message", "https://forum.codewizardshq.com/t/#{post.topic_id}", oPost.user.username)
                    PostDestroyer.new(Discourse.system_user, post).destroy
                elsif raw[8, 6] == "remove" then
                    if (!post.user.primary_group_id.nil? && group.name == "Helpers") then
                        first_reply = Post.find_by(topic_id: post.topic_id, post_number: 2)
                        second_reply = Post.find_by(topic_id: post.topic_id, post_number: 3)
                        if !first_reply.nil? && first_reply.user.username == "system" then
                            log_command("removed an automated message", "https://forum.codewizardshq.com/t/#{post.topic_id}", post.user.username)
                            PostDestroyer.new(Discourse.system_user, first_reply).destroy
                            
                        end
                        if !second_reply.nil? && second_reply.user.username == "system" then
                            log_command("removed an automated message", "https://forum.codewizardshq.com/t/#{post.topic_id}", post.user.username)
                            PostDestroyer.new(Discourse.system_user, second_reply).destroy
                            
                        end
                        PostDestroyer.new(Discourse.system_user, post).destroy
                      end
                elsif raw[8, 4] == "help" && raw[13] != "@" then
                  text = "Hello @#{post.user.username}. Here are some resources to help you on the forum:#{helpLinks}"
                  create_post(post.topic_id, text)
                  log_command("sent public help", "https://forum.codewizardshq.com/t/#{post.topic_id}", post.user.username)
                elsif raw[8,4] == "help" && raw[13] == "@" then
                    if post.user.trust_level >= TrustLevel[3] then
                        for i in 1..raw.length
                            if !User.find_by(username: raw[14, (1+i)]).nil? then
                                helpUser = User.find_by(username: raw[14, (1+i)])
                                helper = post.user
                                title = "Help with the CodeWizardsHQ Forum"
                                raw = "Hello @#{helpUser.username}, @#{helper.username} thinks you might need some help getting around the forum. Here are some resources that you can read if you would like to know more about this forum:#{helpLinks}<br> <br>This message was sent using the [@system help command](https://forum.codewizardshq.com/t/system-add-on-plugin-documentation/8742)." 
                                send_pm(title, raw, helpUser.username)
                                log_command("sent private help to #{helpUser.username}", "https://forum.codewizardshq.com/t/#{post.topic_id}", post.user.username)
                                PostDestroyer.new(Discourse.system_user, post).destroy
                                break
                            end
                        end
                    end   
                end
#             elsif post.user.username == oPost.user.username && !courses[post.topic.category_id].nil? then
#                 phrases = ["homework help", "on my own", "thanks", "thank you", "figured it out", "it works", "it's working", "myself", "solved", "fixed", "tysm"]
#                 phrases.each do |i|
#                     if raw.downcase.include?(i) then
#                         text = "Hello @#{post.user.username}. Based on your last reply, it seems like the issue you needed help with has been solved. If you would like to close the topic, meaning there will be no more replies allowed, follow the instructions below. If your problem is not solved or you would like to leave the topic open, you may ignore this or submit feedback [here](https://forum.codewizardshq.com/t/bot-commands-and-pr-suggestions-for-system/9254).<br><br>To close your topic, navigate back to your topic (the easiest way to do this is to press the back button to take you the last page you were on). Then make a new reply, and in it type `@system close problem solved`. If you need to, you can replace `problem solved` with a different reason for closing. When you post your reply, the topic should close."
#                         title = "Do you want to close your get help topic?"
#                         send_pm(title, text, post.user.username)
#                         log_command("was sent topic closing instructions", "https://forum.codewizardshq.com/t/#{post.topic_id}", post.user.username)
#                         break
#                     end
                    
#                 end
            end
        end
    end
    DiscourseEvent.on(:post_edited) do |post|
        if post.post_number == 1 && check_all_link_types(post.raw) then
            first_reply = Post.find_by(topic_id: post.topic_id, post_number: 2)
            second_reply = Post.find_by(topic_id: post.topic_id, post_number: 3)
            if !first_reply.nil? && first_reply.user.username == "system" then
                PostDestroyer.new(Discourse.system_user, first_reply).destroy
                log_command("had an automated message deleted (issue was fixed)", "https://forum.codewizardshq.com/t/#{post.topic_id}", post.user.username)
            end
            if !second_reply.nil? && second_reply.user.username == "system" then
                PostDestroyer.new(Discourse.system_user, second_reply).destroy
                log_command("had an automated message deleted (issue was fixed)", "https://forum.codewizardshq.com/t/#{post.topic_id}", post.user.username)
            end
        end
        
    end
end