Implement database initialization

.gitignore

@@ -1,5 +1,6 @@
 **/*.rs.bk
 /config/private_patterns
 /config/private_vk_tokens
+/database
 /notes
 /target

README.md

@@ -23,5 +23,6 @@ git clone https://github.com/mike-zueff/social_media_sieve.git
 cd social_media_sieve
 touch config/private_patterns
 touch config/private_vk_tokens
+cargo run
 ```
 - TODO

src/main.rs

@@ -1,5 +1,29 @@
+use rusqlite::*;
+use std::*;
+
 /* SMS entry point. */
 fn main() {
     println!("SMS started.");
+
+    match sms_db_init() {
+        Ok(_) => println!("Database initialization succeeded."),
+        Err(_) => panic!("Database initialization failed."),
+    }
+
     println!("SMS stopped.");
 }
+
+/* Database initialization. */
+fn sms_db_init() -> Result<()> {
+    let _ = fs::create_dir("database");
+    let sms_db_conn = Connection::open("database/sms_db_sqlite")?;
+
+    let _ = sms_db_conn.execute(
+        "CREATE TABLE if not exists vor_obl_settlements (
+            id integer primary key,
+            settlement_id integer,
+            settlement_title text
+        )", NO_PARAMS);
+
+    Ok(())
+}