initial

go.mod

@@ -0,0 +1,3 @@
+module dota_patch_bot
+
+go 1.16

main.go

@@ -0,0 +1,124 @@
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"flag"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"net/http"
+	"time"
+)
+
+type PatchList struct {
+	Patches []Patch `json:"patches"`
+	Success bool    `json:"success"`
+}
+type Patch struct {
+	PatchNumber        string `json:"patch_number"`
+	PatchName          string `json:"patch_name"`
+	PatchTimestamp     int    `json:"patch_timestamp"`
+	PatchWebsite       string `json:"patch_website,omitempty"`
+	PatchWebsiteAnchor string `json:"patch_website_anchor,omitempty"`
+}
+
+func LoadPatches(pl *PatchList, url string) {
+	res, err := http.Get(url)
+	defer res.Body.Close()
+	if err != nil {
+		log.Println(err)
+		return
+	}
+	body, readErr := ioutil.ReadAll(res.Body)
+	if readErr != nil {
+		log.Fatal(readErr)
+	}
+	err = json.Unmarshal(body, pl)
+	if err != nil {
+		log.Fatal("error: ", err)
+	}
+}
+
+func Notify(patch Patch, url string) {
+
+	type Payload struct {
+		Text        string `json:"text"`
+		Format      string `json:"format"`
+		DisplayName string `json:"displayName"`
+		AvatarURL   string `json:"avatar_url"`
+	}
+	var msg string
+	if patch.PatchNumber == "" {
+		msg = "DotaPatchBot online"
+	} else {
+		log.Printf("Patch %v found, notifying\n", patch.PatchNumber)
+
+		if patch.PatchWebsite != "" {
+			msg = fmt.Sprintf("Patch %v released, see website:\nhttps://www.dota2.com/%v", patch.PatchNumber, patch.PatchWebsite)
+		} else {
+			msg = fmt.Sprintf("Patch %v Released", patch.PatchNumber)
+		}
+	}
+	if url != "" {
+		data := struct {
+			Text        string `json:"text"`
+			Format      string `json:"format"`
+			DisplayName string `json:"displayName"`
+			AvatarURL   string `json:"avatar_url"`
+		}{
+			msg,
+			"plain",
+			"DotaPatchBot",
+			"https://i.pinimg.com/originals/8a/8b/50/8a8b50da2bc4afa933718061fe291520.jpg",
+		}
+
+		payloadBytes, err := json.Marshal(data)
+		if err != nil {
+			// handle err
+		}
+		body := bytes.NewReader(payloadBytes)
+
+		req, err := http.NewRequest("POST", url, body)
+		if err != nil {
+			// handle err
+		}
+		req.Header.Set("Content-Type", "application/json")
+
+		resp, err := http.DefaultClient.Do(req)
+		if err != nil {
+			// handle err
+		}
+		defer resp.Body.Close()
+	}
+}
+func main() {
+	hookPtr := flag.String("hook", "", "the webhook to notify")
+	sourcePtr := flag.String("url", "https://www.dota2.com/datafeed/patchnoteslist", "url to fetch patchnotes from")
+	patch_list := PatchList{}
+	var current_patch Patch
+	LoadPatches(&patch_list, *sourcePtr)
+
+	current_patch = patch_list.Patches[len(patch_list.Patches)-1]
+	log.Println("Started bot, loaded patch list")
+	log.Printf("Starting on patch %v", current_patch.PatchNumber)
+	if *hookPtr == "" {
+		log.Println("No webhook set, not notifying")
+	}
+	Notify(Patch{}, "")
+
+	for {
+		time.Sleep(30 * time.Second)
+		LoadPatches(&patch_list, *sourcePtr)
+		newest_patch := patch_list.Patches[len(patch_list.Patches)-1]
+		if newest_patch.PatchNumber != current_patch.PatchNumber {
+			current_patch = newest_patch
+			if *hookPtr != "" {
+				Notify(current_patch, *hookPtr)
+			} else {
+				log.Printf("Patch %v found, no webhook\n", current_patch.PatchNumber)
+			}
+		}
+	}
+
+}