78 lines
1.8 KiB
Go
78 lines
1.8 KiB
Go
package config
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import (
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"os"
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"os/exec"
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"strconv"
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"strings"
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"time"
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"git.velvettear.de/velvettear/loggo"
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)
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var ServerAddress string
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var ServerPort int
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var Directory string
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var ScanInterval time.Duration
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var ConvertAvailable bool
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// initialize the config
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func Initialize() {
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loggo.SetLogLevelByName(os.Getenv("SLIDESHOW_LOGLEVEL"))
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ServerAddress = os.Getenv("SLIDESHOW_ADDRESS")
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tmpInt, _ := strconv.Atoi(os.Getenv("SLIDESHOW_PORT"))
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if tmpInt <= 0 {
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tmpInt = 3000
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}
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ServerPort = tmpInt
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Directory = os.Getenv("SLIDESHOW_DIRECTORY")
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if len(Directory) == 0 {
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tmp, error := os.UserHomeDir()
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if error != nil {
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loggo.Fatal("encountered an error getting the current user's home directory", error.Error())
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}
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Directory = tmp
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}
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stats, error := os.Stat(Directory)
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if error != nil {
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loggo.Fatal("encountered an error checking the directory '"+Directory+"'", error.Error())
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}
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if !stats.IsDir() {
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loggo.Fatal("configured directory '" + Directory + "' is not a valid directory")
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}
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tmpInt, _ = strconv.Atoi(os.Getenv("SLIDESHOW_SCANINTERVAL"))
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if tmpInt <= 0 {
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tmpInt = 60
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}
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ScanInterval = time.Duration(tmpInt) * time.Second
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checkConvertCommand()
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}
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// check if 'convert' is available
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func checkConvertCommand() {
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cmd := exec.Command("which", "convert")
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error := cmd.Run()
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ConvertAvailable = error == nil
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if error == nil {
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return
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}
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loggo.Warning("could not find imagemagick's 'convert' command, scaling is unavailable", error.Error())
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}
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// check if the given string is a valid resolution
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func IsValidResolution(resolution string) bool {
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if len(resolution) <= 0 {
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return false
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}
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width, height, found := strings.Cut(resolution, "x")
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if !found {
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return false
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}
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_, error := strconv.Atoi(width)
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if error != nil {
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return false
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}
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_, error = strconv.Atoi(height)
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return error == nil
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}
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