Added forgotten default field

settings.go

@@ -0,0 +1,124 @@
+package settings
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"os"
+
+	"github.com/Unbewohnte/OBM/logger"
+	"github.com/Unbewohnte/OBM/util"
+)
+
+const (
+	settingsFilename string = "settings.json"
+)
+
+// checks if the settings.json exists in current directory
+func DoesExist() (bool, error) {
+	files, err := os.ReadDir(".")
+	if err != nil {
+		return false, errors.New(fmt.Sprintf("Unable to read current directory %s", err))
+	}
+
+	for _, file := range files {
+		if !file.IsDir() && file.Name() == settingsFilename {
+			return true, nil
+		}
+	}
+
+	return false, nil
+}
+
+// creates "settings.json" in current directory
+func Create() error {
+	exists, err := DoesExist()
+	if err != nil {
+		return err
+	}
+	if exists {
+		return nil
+	}
+
+	file, err := os.Create(settingsFilename)
+	if err != nil {
+		return errors.New(fmt.Sprintf("Unable to create settings file : %s", err))
+	}
+
+	// marshaling default settings
+	settingsJson, err := json.MarshalIndent(Settings{
+		OsuDir: "",
+		BackgroundReplacement: backgroundReplacement{
+			Enabled:              true,
+			ReplacementImagePath: "",
+		},
+		BackgroundRetrievement: backgroundRetrievement{
+			Enabled:          false,
+			RetrievementPath: "",
+		},
+		BackgroundRemovement: backgroundRemovement{
+			Enabled: false,
+		},
+		CreateBlackBGImage: backgroundCreatement{
+			Enabled: true,
+			Width:   1920,
+			Height:  1080,
+		},
+		Workers: 100,
+	}, "", " ")
+	if err != nil {
+		return errors.New(fmt.Sprintf("Could not marshal settings into file : %s", err))
+	}
+
+	file.Write(settingsJson)
+	file.Close()
+
+	return nil
+}
+
+// unmarshalls settings.json into struct and processes the edge-cases
+func Get() Settings {
+	settingsFileContents, err := os.ReadFile(settingsFilename)
+	if err != nil {
+		logger.LogError(true, fmt.Sprintf("Could not read settings file : %s", err))
+	}
+
+	var settings Settings
+	err = json.Unmarshal(settingsFileContents, &settings)
+	if err != nil {
+		logger.LogError(true, fmt.Sprintf("Could not unmarshal json file : %s", err))
+	}
+
+	// if all features are disabled
+	if !settings.BackgroundReplacement.Enabled && !settings.BackgroundRetrievement.Enabled {
+		logger.LogInfo("No features enabled. Exiting...")
+		os.Exit(0)
+	}
+
+	// checking for edge cases or mistakes made in the settings file,
+	// enabled and disabled fields
+	if settings.BackgroundReplacement.Enabled {
+		if settings.BackgroundReplacement.ReplacementImagePath == "" || settings.BackgroundReplacement.ReplacementImagePath == " " {
+			logger.LogError(true, "`replacementImagePath` is not specified !")
+		} else if !util.IsImage(settings.BackgroundReplacement.ReplacementImagePath) {
+			logger.LogError(true, "`replacementImagePath` is pointing to a non-image file !`")
+		}
+	} else {
+		settings.BackgroundReplacement.ReplacementImagePath = ""
+	}
+
+	if settings.BackgroundRetrievement.Enabled {
+		if settings.BackgroundRetrievement.RetrievementPath == "" || settings.BackgroundRetrievement.RetrievementPath == " " {
+			logger.LogError(true, "`retrievementPath` is not specified !")
+		}
+	} else {
+		settings.BackgroundRetrievement.RetrievementPath = ""
+	}
+
+	if settings.Workers <= 0 {
+		settings.Workers = 1
+		logger.LogWarning("`workers` is set to 0 or less. Replaced with 1")
+	}
+
+	return settings
+}