From eafaf4823363609ab5488e7aa51802e6f2d37054 Mon Sep 17 00:00:00 2001
From: DutchEllie <personal@quenten.nl>
Date: Wed, 8 Sep 2021 22:19:05 +0200
Subject: [PATCH] pepe server

---
 pepeservice/Dockerfile | 13 +++++++++
 pepeservice/go.mod     |  3 ++
 pepeservice/main.go    | 64 ++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 80 insertions(+)
 create mode 100644 pepeservice/Dockerfile
 create mode 100644 pepeservice/go.mod
 create mode 100644 pepeservice/main.go

diff --git a/pepeservice/Dockerfile b/pepeservice/Dockerfile
new file mode 100644
index 0000000..5093085
--- /dev/null
+++ b/pepeservice/Dockerfile
@@ -0,0 +1,13 @@
+# syntax=docker/dockerfile:1
+FROM golang:1.17 AS builder
+WORKDIR /go/src/quenten.nl/pepeservice
+
+COPY . ./
+RUN go mod download
+RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o app ./
+
+FROM alpine:latest
+RUN apk --no-cache add ca-certificates
+WORKDIR /app
+COPY --from=builder /go/src/quenten.nl/pepeservice/app .
+CMD ["./app"]
\ No newline at end of file
diff --git a/pepeservice/go.mod b/pepeservice/go.mod
new file mode 100644
index 0000000..c8229ad
--- /dev/null
+++ b/pepeservice/go.mod
@@ -0,0 +1,3 @@
+module quenten.nl/pepeservice
+
+go 1.17
diff --git a/pepeservice/main.go b/pepeservice/main.go
new file mode 100644
index 0000000..af19fdc
--- /dev/null
+++ b/pepeservice/main.go
@@ -0,0 +1,64 @@
+package main
+
+import (
+	"log"
+	"math/rand"
+	"net/http"
+	"os"
+	"time"
+)
+
+type application struct {
+	errorLog *log.Logger
+	infoLog  *log.Logger
+
+	pepe_dir string
+}
+
+func main() {
+	pepe_dir := os.Getenv("PEPE_DIR")
+
+	infoLog := log.New(os.Stdout, "INFO\t", log.Ldate|log.Ltime)
+	errorLog := log.New(os.Stderr, "ERROR\t", log.Ldate|log.Ltime|log.Lshortfile)
+
+	app := &application{
+		infoLog:  infoLog,
+		errorLog: errorLog,
+		pepe_dir: pepe_dir,
+	}
+
+	mux := http.NewServeMux()
+	mux.HandleFunc("/pepe", app.sendPepe)
+
+	app.infoLog.Printf("Starting server at :4000\n")
+	err := http.ListenAndServe(":4000", mux)
+	log.Fatal(err)
+
+}
+
+func (app *application) sendPepe(w http.ResponseWriter, r *http.Request) {
+	file, err := os.Open(app.pepe_dir)
+	if err != nil {
+		app.errorLog.Printf("Error opening pepe directory\n")
+		http.Error(w, "Internal Server Error", 500)
+		return
+	}
+	defer file.Close()
+
+	names, err := file.Readdirnames(0)
+	if err != nil {
+		app.errorLog.Printf("Error reading pepe directory file names\n")
+		http.Error(w, "Internal Server Error", 500)
+		return
+	}
+
+	// Random number generator
+	s := rand.NewSource(time.Now().UnixMicro())
+	rd := rand.New(s) // Init pseudorandom generator
+	number := rd.Intn(len(names))
+
+	baseURL := "https://cdn.nicecock.eu/pepe/1.00/"
+	URL := baseURL + names[number]
+
+	w.Write([]byte(URL))
+}