Add minimal config

go.mod

@@ -12,6 +12,7 @@ require (
 	github.com/cpuguy83/go-md2man/v2 v2.0.3 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/google/uuid v1.4.0 // indirect
+	github.com/pelletier/go-toml/v2 v2.1.0 // indirect
 	github.com/pion/datachannel v1.5.5 // indirect
 	github.com/pion/dtls/v2 v2.2.8 // indirect
 	github.com/pion/ice/v3 v3.0.2 // indirect

go.sum

@@ -37,6 +37,8 @@ github.com/onsi/ginkgo v1.16.5/go.mod h1:+E8gABHa3K6zRBolWtd+ROzc/U5bkGt0FwiG042
 github.com/onsi/gomega v1.7.1/go.mod h1:XdKZgCCFLUoM/7CFJVPcG8C1xQ1AJ0vpAezJrB7JYyY=
 github.com/onsi/gomega v1.10.1/go.mod h1:iN09h71vgCQne3DLsj+A5owkum+a2tYe+TOCB1ybHNo=
 github.com/onsi/gomega v1.17.0/go.mod h1:HnhC7FXeEQY45zxNK3PPoIUhzk/80Xly9PcubAlGdZY=
+github.com/pelletier/go-toml/v2 v2.1.0 h1:FnwAJ4oYMvbT/34k9zzHuZNrhlz48GB3/s6at6/MHO4=
+github.com/pelletier/go-toml/v2 v2.1.0/go.mod h1:tJU2Z3ZkXwnxa4DPO899bsyIoywizdUvyaeZurnPPDc=
 github.com/pion/datachannel v1.5.5 h1:10ef4kwdjije+M9d7Xm9im2Y3O6A6ccQb0zcqZcJew8=
 github.com/pion/datachannel v1.5.5/go.mod h1:iMz+lECmfdCMqFRhXhcA/219B0SQlbpoR2V118yimL0=
 github.com/pion/dtls/v2 v2.2.7/go.mod h1:8WiMkebSHFD0T+dIU+UeBaoV7kDhOW5oDCzZ7WZ/F9s=

ministream.toml

@@ -0,0 +1,9 @@
+# SiteName is used for displaying title of site on frontend.
+# Default: "ministream"
+# Env: MINISTREAM_SITENAME
+SiteName = "stream.example.org"
+
+# HTTPListenAddr is which port the HTTP server will listen on.
+# Default: ":8080"
+# Env: MINISTREAM_HTTPLISTENADDR
+HTTPListenAddr = ":8080"

server/config.go

@@ -0,0 +1,73 @@
+package server
+
+import (
+	"io"
+	"os"
+
+	"github.com/pelletier/go-toml/v2"
+)
+
+type Config struct {
+	SiteName       string `json:"siteName" toml:"siteName"`
+	HTTPListenAddr string `json:"httpListenAddr" toml:"HTTPListenAddr"`
+}
+
+func DefaultConfig() *Config {
+	return &Config{
+		SiteName:       "ministream",
+		HTTPListenAddr: ":8080",
+	}
+}
+
+func (c *Config) OverrideFromEnv() {
+	if siteName, ok := os.LookupEnv("MINISTREAM_SITENAME"); ok {
+		c.SiteName = siteName
+	}
+
+	if httpAddr, ok := os.LookupEnv("MINISTREAM_HTTPLISTENADDR"); ok {
+		c.HTTPListenAddr = httpAddr
+	}
+}
+
+func ConfigFromReader(r io.Reader) (*Config, error) {
+	var c Config
+
+	err := toml.NewDecoder(r).Decode(&c)
+	if err != nil {
+		return nil, err
+	}
+
+	return &c, nil
+}
+
+func ConfigFromFile(path string) (*Config, error) {
+	f, err := os.Open(path)
+	if err != nil {
+		return nil, err
+	}
+	defer f.Close()
+
+	return ConfigFromReader(f)
+}
+
+func ConfigFromDefault() (*Config, error) {
+	var config *Config
+	defaultPaths := []string{
+		"ministream.toml",
+	}
+
+	for _, p := range defaultPaths {
+		c, err := ConfigFromFile(p)
+		if err != nil {
+			continue
+		}
+		config = c
+		break
+	}
+
+	if config == nil {
+		config = DefaultConfig()
+	}
+
+	return config, nil
+}

server/config_test.go

@@ -0,0 +1,37 @@
+package server_test
+
+import (
+	"strings"
+	"testing"
+
+	"git.t-juice.club/torjus/ministream/server"
+)
+
+func TestConfig(t *testing.T) {
+	t.Run("FromReader", func(t *testing.T) {
+		configString := `SiteName = "ministream.example.org"`
+		expectedSiteName := "ministream.example.org"
+		r := strings.NewReader(configString)
+
+		c, err := server.ConfigFromReader(r)
+		if err != nil {
+			t.Fatalf("Error reading config: %s", err)
+		}
+
+		if c.SiteName != expectedSiteName {
+			t.Errorf("SiteName incorrect. Got %s want %s", c.SiteName, expectedSiteName)
+		}
+	})
+	t.Run("OverrideFromEnv", func(t *testing.T) {
+		c := server.DefaultConfig()
+		expectedSiteName := "ms.example.org"
+
+		t.Setenv("MINISTREAM_SITENAME", expectedSiteName)
+
+		c.OverrideFromEnv()
+
+		if c.SiteName != expectedSiteName {
+			t.Errorf("SiteName incorrect. Got %s want %s", c.SiteName, expectedSiteName)
+		}
+	})
+}