Finally, it works.

Further cleanup work is needed.

1 files changed, 24 insertions, 0 deletions

diff --git a/src/config.rs b/src/config.rs
new file mode 100644
index 0000000..d32c525
--- /dev/null
+++ b/src/config.rs
@@ -0,0 +1,24 @@
+use std::fs::File;
+use std::io::Read;
+
+use serde_derive::Deserialize;
+
+#[derive(Deserialize)]
+pub struct Config {
+    pub bot_token: String,
+    pub log_file: String,
+    pub db_file: String,
+}
+
+impl Config {
+    // Read config file. Panic if any error occurs.
+    pub fn from_file(file_path: &str) -> Config {
+        let mut file = File::open(file_path)
+            .unwrap_or_else(|_| panic!("cannot open file {}", file_path));
+        let mut config = String::new();
+        file.read_to_string(&mut config)
+            .unwrap_or_else(|_| panic!("cannot read config file {}", file_path));
+        return serde_json::from_str(config.as_str())
+            .expect("cannot decode config file in JSON");
+    }
+}
\ No newline at end of file