Initial commit

Initial commit

.dockerignore

@@ -0,0 +1,9 @@
+.git
+.gitignore
+Dockerfile
+.DS_Store
+README.md
+LICENSE
+web-watcher
+db.sqlite
+vendor

.gitignore

@@ -0,0 +1,16 @@
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, build with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+db.sqlite
+web-watcher
+.idea/*

Dockerfile

@@ -0,0 +1,14 @@
+FROM golang:latest
+
+WORKDIR /app
+
+COPY go.mod go.sum ./
+
+RUN go mod download
+
+COPY . .
+
+RUN go build -o main .
+
+CMD ["./main"]
+

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2019 Shellbear
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -0,0 +1,78 @@
+# Web-watcher
+
+A small discord bot which aims to monitor and send notifications on website changes.
+
+## Installation
+
+If you want to self host this bot, you have to first create a new Discord application and bot from the [developer portal](https://discordapp.com/developers/applications/).
+You can follow this [tutorial](https://github.com/reactiflux/discord-irc/wiki/Creating-a-discord-bot-&-getting-a-token) to achieve this step.
+
+With go CLI:
+```bash
+go get github.com/ShellBear/web-watcher
+```
+
+## Usage
+
+```bash
+export DISCORD_TOKEN=YOUR_DISCORD_TOKEN
+web-watcher
+
+# or
+
+web-watcher --token YOUR_DISCORD_TOKEN
+```
+
+```bash
+web-watcher --help
+
+Web-watcher discord Bot.
+
+Options:
+  -delay int
+        Watch delay in minutes (default 60)
+  -token string
+        Discord token
+```
+
+By default the watch interval for every website is 1 Hour but you can easily change this with the `delay` parameter followed by the time interval in minutes.
+
+```bash
+# Set watch interval to 10 minutes
+web-watcher --token YOUR_DISCORD_TOKEN --delay 10
+```
+
+## Commands
+
+#### !watch [URL]
+
+Add an URL to the watchlist.
+
+#### !unwatch [URL]
+
+Remove an URL from the watchlist.
+
+#### !watchlist
+
+Get the complete watchlist.
+
+## Deploy
+
+With docker:
+```bash
+docker build -t web-watcher .
+```
+
+And test:
+```bash
+docker run -e DISCORD_TOKEN=YOUR_DISCORD_TOKEN web-watcher
+```
+
+## Built With
+
+- [Gorm](https://github.com/jinzhu/gorm) - The fantastic ORM library for Golang
+- [DiscordGo](https://github.com/bwmarrin/discordgo) - Go bindings for Discord
+
+## License
+
+This project is licensed under the MIT License - see the [LICENSE](LICENSE.md) file for details

commands.go

@@ -0,0 +1,113 @@
+package main
+
+import (
+	"fmt"
+	"github.com/bwmarrin/discordgo"
+	"log"
+	"net/url"
+	"strings"
+	"time"
+)
+
+type commandProto func(*discordgo.Session, *discordgo.MessageCreate, []string) (*discordgo.Message, error)
+
+var commands = map[string]commandProto{
+	"!watch":     watch,
+	"!unwatch":   unwatch,
+	"!watchlist": watchList,
+}
+
+func messageCreate(s *discordgo.Session, m *discordgo.MessageCreate) {
+	args := strings.Split(strings.TrimSpace(m.Content), " ")
+
+	if m.Author.ID == s.State.User.ID || len(args) == 0 {
+		return
+	}
+
+	if val, ok := commands[args[0]]; ok {
+		if _, err := val(s, m, args); err != nil {
+			log.Fatalln(err)
+		}
+	}
+}
+
+func watch(s *discordgo.Session, m *discordgo.MessageCreate, args []string) (*discordgo.Message, error) {
+	if len(args) != 2 {
+		return s.ChannelMessageSend(m.ChannelID, m.Author.Mention()+" Usage: watch URL")
+	}
+
+	url, err := url.ParseRequestURI(args[1])
+	if err != nil {
+		return s.ChannelMessageSend(m.ChannelID, m.Author.Mention()+" provided URL is invalid")
+	}
+
+	website := Website{
+		Url:     url.String(),
+		GuildID: m.GuildID,
+	}
+
+	if db.First(&website, website).RecordNotFound() {
+		website.ChannelID = m.ChannelID
+
+		db.Create(&website)
+		launchTask(&website)
+
+		return s.ChannelMessageSend(m.ChannelID, m.Author.Mention()+" successfully registered URL")
+	}
+
+	return s.ChannelMessageSend(m.ChannelID, m.Author.Mention()+" this URL has already been registered")
+}
+
+func unwatch(s *discordgo.Session, m *discordgo.MessageCreate, args []string) (*discordgo.Message, error) {
+	if len(args) != 2 {
+		return s.ChannelMessageSend(m.ChannelID, m.Author.Mention()+" Usage: unwatch URL")
+	}
+
+	url, err := url.ParseRequestURI(args[1])
+	if err != nil {
+		return s.ChannelMessageSend(m.ChannelID, m.Author.Mention()+" provided URL is invalid")
+	}
+
+	var website Website
+
+	if !db.First(&website, Website{Url: url.String(), GuildID: m.GuildID}).RecordNotFound() {
+		taskName := website.Url + website.ChannelID
+		if val, ok := tasks[taskName]; ok {
+			val()
+			delete(tasks, taskName)
+		}
+
+		db.Delete(&website)
+		return s.ChannelMessageSend(m.ChannelID, m.Author.Mention()+" successfully deleted URL")
+	}
+
+	return s.ChannelMessageSend(m.ChannelID, m.Author.Mention()+" URL doesn't exist")
+}
+
+func watchList(s *discordgo.Session, m *discordgo.MessageCreate, args []string) (*discordgo.Message, error) {
+	var websites []Website
+
+	db.Find(&websites, Website{GuildID: m.GuildID})
+
+	if len(websites) == 0 {
+		return s.ChannelMessageSend(m.ChannelID, m.Author.Mention()+"There is no registered URL. Add one with `watch` command")
+	}
+
+	var urls []string
+
+	for i, website := range websites {
+		urls = append(urls, fmt.Sprintf("%d - %s", i+1, website.Url))
+	}
+
+	return s.ChannelMessageSend(m.ChannelID, m.Author.Mention()+"\n"+strings.Join(urls, "\n"))
+}
+
+func ready(discord *discordgo.Session, ready *discordgo.Ready) {
+	if err := discord.UpdateStatus(0, "Looking at other people's website"); err != nil {
+		log.Fatalln("Error attempting to set my status,", err)
+	}
+
+	servers := discord.State.Guilds
+	log.Printf("Web-watcher has started on %d servers\n", len(servers))
+	log.Printf("Inspecting websites every %d minutes", int((time.Duration(*watchDelay) * time.Minute).Minutes()))
+}

go.mod

@@ -0,0 +1,8 @@
+module web-watcher
+
+go 1.13
+
+require (
+	github.com/bwmarrin/discordgo v0.19.0
+	github.com/jinzhu/gorm v1.9.10
+)