1 files changed, 87 insertions, 0 deletions
diff --git a/src/config/mod.rs b/src/config/mod.rs
new file mode 100644
index 0000000..26d80f4
--- /dev/null
+++ b/src/config/mod.rs
@@ -0,0 +1,87 @@
+pub mod args;
+
+use serde::{Deserialize, Serialize};
+
+use std::{collections::BTreeMap, ops::Deref, path::Path};
+
+use figment::{
+    providers::{Format, Toml},
+    value::{Dict, Map},
+    Error, Figment, Metadata, Profile, Provider,
+};
+
+use anyhow::{Context, Result};
+
+/// Configuration for the Bot
+#[derive(Clone, Debug, Deserialize, Serialize)]
+// pub struct Config();
+
+// TODO make forge optional
+pub struct Config {
+    #[serde(flatten)]
+    config: BTreeMap<String, ForgeConfig>
+}
+
+impl Deref for Config {
+    type Target = BTreeMap<String, ForgeConfig>;
+
+    fn deref(&self) -> &Self::Target {
+        &self.config
+    }
+}
+
+impl Config {
+    // Allow the configuration to be extracted from any `Provider`.
+    fn from<T: Provider>(provider: T) -> Result<Config, Error> {
+        Figment::from(provider).extract()
+    }
+
+    // Provide a default provider, a `Figment`.
+    pub fn figment() -> Result<Figment> {
+        use figment::providers::Env;
+
+        let dirs = xdg::BaseDirectories::with_prefix(env!("CARGO_PKG_NAME")).unwrap();
+
+        Ok(Figment::from(Toml::file(
+            dirs.place_config_file("config.toml")
+                .context("failed to create config directory")?,
+        ))
+        .merge(Toml::file(
+            dirs.place_config_file("config.yaml")
+                .context("failed to create config directory")?,
+        ))
+        .merge(Env::prefixed("GTREE_")))
+    }
+}
+
+// Make `Config` a provider itself for composability.
+impl Provider for Config {
+    fn metadata(&self) -> Metadata {
+        Metadata::named("Library Config")
+    }
+
+    fn data(&self) -> Result<Map<Profile, Dict>, Error> {
+        figment::providers::Serialized::defaults(self).data()
+    }
+}
+
+#[derive(Clone, Debug, Deserialize, Serialize)]
+#[serde(tag = "type")]
+pub enum ForgeConfig {
+    #[serde(alias = "gitlab")]
+    Gitlab(crate::forge::gitlab::config::Gitlab),
+}
+
+pub trait ForgeConfigTrait {
+    fn root(&self) -> &str;
+}
+
+impl Deref for ForgeConfig {
+    type Target = dyn ForgeConfigTrait;
+
+    fn deref(&self) -> &Self::Target {
+        match self {
+            ForgeConfig::Gitlab(conf) => conf,
+        }
+    }
+}