refactor(odin): ported list command.

config.odin

@@ -0,0 +1,61 @@
+package main
+
+import "core:encoding/json"
+import "core:fmt"
+import "core:os"
+import "core:path/filepath"
+
+SshKeyPair :: struct {
+	Private: string `json:"private"`,
+	Public:  string `json:"public"`,
+}
+
+ScanConfig :: struct {
+	Matcher: string   `json:"matcher"`,
+	Exclude: []string `json:"exclude"`,
+	Include: []string `json:"include"`,
+}
+
+Config :: struct {
+	Keys:       []SshKeyPair `json:"keys"`,
+	ScanConfig: ScanConfig   `json:"scan"`,
+}
+
+load_config :: proc() -> (Config, bool) {
+	home, home_err := os.user_home_dir(context.allocator)
+	if home_err != nil {
+		fmt.printf("Error getting home dir: %v\n", home_err)
+		return Config{}, false
+	}
+	config_path, join_err := filepath.join([]string{home, ".envr", "config.json"})
+	if join_err != nil {
+		return Config{}, false
+	}
+
+	data, read_err := os.read_entire_file_from_path(config_path, context.allocator)
+	if read_err != nil {
+		fmt.println("No config file found. Please run `envr init` to generate one.")
+		return Config{}, false
+	}
+
+	cfg: Config
+	err := json.unmarshal(data, &cfg)
+	if err != nil {
+		fmt.printf("Error parsing config: %v\n", err)
+		return Config{}, false
+	}
+
+	return cfg, true
+}
+
+envr_dir :: proc() -> string {
+	home, _ := os.user_home_dir(context.allocator)
+	dir, _ := filepath.join([]string{home, ".envr"})
+	return dir
+}
+
+data_age_path :: proc() -> string {
+	dir := envr_dir()
+	path, _ := filepath.join([]string{dir, "data.age"})
+	return path
+}