feat: init chaos

2023-04-21 19:04:11 +02:00 · 2023-04-21 19:04:11 +02:00 · 6f392d20d5
commit 6f392d20d5
6 changed files with 335 additions and 0 deletions
--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1,2 @@
+*.mp4
+*.wav
--- a/README.md
+++ b/README.md
@ -0,0 +1,35 @@
+# varialine
+
+Varia landline experiments.
+
+## hacking
+
+```
+export TWILIO_ACCOUNT_SID=...
+export TWILIO_AUTH_TOKEN=...
+```
+
+```
+ngrok config add-authtoken ...
+ngrok http 1312
+```
+
+## `about.go`
+
+- receives incoming calls
+- plays a espeak-like message back
+
+```
+go run about.go
+```
+
+## `record.go`
+
+- receives incoming calls
+- prompts for message, records it
+- downloads them from Twilio infra
+- deletes them from Twilio infra
+
+```
+go run record.go
+```
--- a/about.go
+++ b/about.go
@ -0,0 +1,29 @@
+package main
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	"github.com/twilio/twilio-go/twiml"
+)
+
+func main() {
+	gin.SetMode(gin.ReleaseMode)
+
+	router := gin.Default()
+	router.POST("/", func(context *gin.Context) {
+		say := &twiml.VoiceSay{
+			Message: "varia (Gouwstraat 3, Rotterdam) is a space for developing collective approaches to everyday technology. As varia members, we maintain and facilitate a collective infrastructure from which we generate questions, opinions, modifications, help and action. We work with free software, organise events and collaborate in different constellations. varia figures things out as they go, tries to keep notes, is multilingual, has open hours and can be contacted at info[@]varia.zone.",
+		}
+
+		twimlResult, err := twiml.Voice([]twiml.Element{say})
+		if err != nil {
+			context.String(http.StatusInternalServerError, err.Error())
+		} else {
+			context.Header("Content-Type", "text/xml")
+			context.String(http.StatusOK, twimlResult)
+		}
+	})
+
+	router.Run(":1312")
+}
--- a/go.mod
+++ b/go.mod
@ -0,0 +1,37 @@
+module varia.zone/varialine
+
+go 1.20
+
+require (
+	github.com/gin-gonic/gin v1.9.0
+	github.com/twilio/twilio-go v1.6.0
+)
+
+require (
+	github.com/beevik/etree v1.1.0 // indirect
+	github.com/bytedance/sonic v1.8.0 // indirect
+	github.com/chenzhuoyu/base64x v0.0.0-20221115062448-fe3a3abad311 // indirect
+	github.com/gin-contrib/sse v0.1.0 // indirect
+	github.com/go-playground/locales v0.14.1 // indirect
+	github.com/go-playground/universal-translator v0.18.1 // indirect
+	github.com/go-playground/validator/v10 v10.11.2 // indirect
+	github.com/goccy/go-json v0.10.0 // indirect
+	github.com/golang/mock v1.6.0 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/klauspost/cpuid/v2 v2.0.9 // indirect
+	github.com/leodido/go-urn v1.2.1 // indirect
+	github.com/mattn/go-isatty v0.0.17 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421 // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/pelletier/go-toml/v2 v2.0.6 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
+	github.com/ugorji/go/codec v1.2.9 // indirect
+	golang.org/x/arch v0.0.0-20210923205945-b76863e36670 // indirect
+	golang.org/x/crypto v0.5.0 // indirect
+	golang.org/x/net v0.7.0 // indirect
+	golang.org/x/sys v0.5.0 // indirect
+	golang.org/x/text v0.7.0 // indirect
+	google.golang.org/protobuf v1.28.1 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)
--- a/go.sum
+++ b/go.sum
@ -0,0 +1,121 @@
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--- a/record.go
+++ b/record.go
@ -0,0 +1,111 @@
+package main
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"github.com/twilio/twilio-go"
+	api "github.com/twilio/twilio-go/rest/api/v2010"
+	"github.com/twilio/twilio-go/twiml"
+)
+
+// downloadFile downloads a file from the interwebz.
+func downloadFile(filepath string, url string) error {
+	resp, err := http.Get(url)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	out, err := os.Create(filepath)
+	if err != nil {
+		return err
+	}
+	defer out.Close()
+
+	_, err = io.Copy(out, resp.Body)
+	return err
+}
+
+// pullRecordings downloads recordings from Twilio infra.
+func pullRecordings() {
+	cwd, err := os.Getwd()
+	if err != nil {
+		fmt.Printf("failed to get cwd: %s\n", err)
+		os.Exit(1)
+	}
+
+	client := twilio.NewRestClient()
+	for {
+		fmt.Println("sleeping for 5 minutes...")
+		time.Sleep(300 * time.Second)
+		fmt.Println("waking up & polling for recordings...")
+
+		resp, err := client.Api.ListRecording(&api.ListRecordingParams{})
+		if err != nil {
+			fmt.Printf("failed to list recordings: %s\n", err)
+			continue
+		}
+
+		if len(resp) == 0 {
+			fmt.Println("no recordings, sleeping again!")
+			continue
+		}
+
+		for _, rec := range resp {
+			medUrl := *rec.MediaUrl
+			fmt.Printf("attempting to download %s\n", medUrl)
+			parsed, err := url.Parse(medUrl)
+			if err != nil {
+				fmt.Printf("failed to parse %s: %s\n", medUrl, err)
+				continue
+			}
+
+			split := strings.Split(parsed.Path, "/")
+			fname := fmt.Sprintf("%s.wav", split[len(split)-1])
+			absFname := fmt.Sprintf("%s/%s", cwd, fname)
+
+			if err := downloadFile(absFname, medUrl); err != nil {
+				fmt.Printf("failed to download %s: %s\n", medUrl, err)
+				continue
+			}
+
+			fmt.Printf("attempting to delete %s\n", medUrl)
+			err = client.Api.DeleteRecording(*rec.Sid, &api.DeleteRecordingParams{})
+			if err != nil {
+				fmt.Printf("failed to delete %s: %s\n", medUrl, err)
+				continue
+			}
+		}
+	}
+}
+
+func main() {
+	gin.SetMode(gin.ReleaseMode)
+
+	router := gin.Default()
+	router.POST("/", func(context *gin.Context) {
+		say := &twiml.VoiceSay{Message: "Thanks for calling Varia. Please leave a message after the beep."}
+		record := &twiml.VoiceRecord{PlayBeep: "true"}
+
+		twimlResult, err := twiml.Voice([]twiml.Element{say, record})
+		if err != nil {
+			context.String(http.StatusInternalServerError, err.Error())
+		} else {
+			context.Header("Content-Type", "text/xml")
+			context.String(http.StatusOK, twimlResult)
+		}
+	})
+
+	fmt.Println("firing up recording downloader / deleter")
+	go pullRecordings()
+
+	fmt.Println("running server...")
+	router.Run(":1312")
+}