1 files changed, 79 insertions, 0 deletions
diff --git a/internal/config/config.go b/internal/config/config.go
new file mode 100644
index 0000000..f865b67
--- /dev/null
+++ b/internal/config/config.go
@@ -0,0 +1,79 @@
+package config
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+
+	"codeberg.org/snonux/gos/internal/colour"
+)
+
+// The config file containing all the secrets and credentials plus maybe more.
+type Config struct {
+	LastRunEpoch        int64 `json:"LastRunEpoch,omitempty"`
+	MastodonURL         string
+	MastodonAccessToken string
+	LinkedInClientID    string
+	LinkedInSecret      string
+	LinkedInRedirectURL string
+	// Will be updated by gos automatically, after successful oauth2
+	LinkedInAccessToken string `json:"LinkedInAccessToken,omitempty"`
+	// Will be updated by gos automatically, after successful oauth2
+	LinkedInPersonID string `json:"LinkedInPersonID,omitempty"`
+}
+
+func New(configPath string, composeEntry bool) (Config, error) {
+	var conf Config
+
+	_, err := os.Stat(configPath)
+	if os.IsNotExist(err) {
+		if !composeEntry {
+			return conf, fmt.Errorf("No config file %s", configPath)
+		}
+		// Create empty new config for compose mode.
+		return conf, conf.WriteToDisk(configPath)
+	}
+
+	file, err := os.Open(configPath)
+	if err != nil {
+		return conf, fmt.Errorf("failed to open file: %w", err)
+	}
+	defer file.Close()
+
+	bytes, err := io.ReadAll(file)
+	if err != nil {
+		return conf, fmt.Errorf("failed to read file: %w", err)
+	}
+
+	if err := json.Unmarshal(bytes, &conf); err != nil {
+		return conf, fmt.Errorf("failed to unmarshal JSON: %w", err)
+	}
+
+	return conf, nil
+}
+
+func (s Config) WriteToDisk(configPath string) error {
+	colour.Infoln("Writing", configPath)
+	if err := os.MkdirAll(filepath.Dir(configPath), os.ModePerm); err != nil {
+		return err
+	}
+
+	bytes, err := json.MarshalIndent(s, "", "  ")
+	if err != nil {
+		return fmt.Errorf("failed to marshal JSON: %w", err)
+	}
+	tmpConfigPath := fmt.Sprintf("%s.tmp", configPath)
+	file, err := os.Create(tmpConfigPath)
+	if err != nil {
+		return fmt.Errorf("failed to create file: %w", err)
+	}
+	defer file.Close()
+
+	if _, err := file.Write(bytes); err != nil {
+		return fmt.Errorf("failed to write to file: %w", err)
+	}
+
+	return os.Rename(tmpConfigPath, configPath)
+}