parser: setup clap

parser/src/structs/config.rs

@@ -0,0 +1,62 @@
+use std::fs::{self, File};
+
+use clap::Parser;
+use serde::{Deserialize, Serialize};
+
+#[derive(Parser, Debug, Clone, Default, Serialize, Deserialize)]
+#[command(version, about, long_about = None)]
+pub struct Config {
+    /// bitcoind `-datadir=<dir>` argument
+    #[arg(long, value_name = "DIR")]
+    pub datadir: Option<String>,
+
+    /// bitcoind `-blocksonly` argument, default: true
+    #[arg(long)]
+    pub blocksonly: Option<bool>,
+
+    /// bitcoind `-rpcconnect=<ip>` argument
+    #[arg(long, value_name = "IP")]
+    pub rpcconnect: Option<String>,
+
+    /// Delay between runs, default: 0
+    #[arg(long, value_name = "SECONDS")]
+    pub delay: Option<u64>,
+}
+
+impl Config {
+    const PATH: &'static str = "config.toml";
+
+    pub fn read() -> Self {
+        File::open(Self::PATH).unwrap();
+
+        let string = fs::read_to_string(Self::PATH).unwrap();
+
+        let config_args = Config::parse();
+
+        let mut config_saved: Config = toml::from_str(&string).unwrap_or_default();
+
+        if let Some(datadir) = config_args.datadir {
+            config_saved.datadir = Some(datadir);
+        }
+
+        if let Some(blocksonly) = config_args.blocksonly {
+            config_saved.blocksonly = Some(blocksonly);
+        } else {
+            config_saved.blocksonly = Some(true);
+        }
+
+        if let Some(rpcconnect) = config_args.rpcconnect {
+            config_saved.rpcconnect = Some(rpcconnect);
+        }
+
+        if let Some(delay) = config_args.delay {
+            config_saved.delay = Some(delay);
+        }
+
+        config_saved
+    }
+
+    pub fn write(&self) -> std::io::Result<()> {
+        fs::write(Self::PATH, toml::to_string(self).unwrap())
+    }
+}

parser/src/structs/mod.rs

@@ -8,6 +8,7 @@ mod any_map;
 mod bi_map;
 mod block_data;
 mod block_path;
+mod config;
 mod counter;
 mod date_data;
 mod date_map;
@@ -33,6 +34,7 @@ pub use any_map::*;
 pub use bi_map::*;
 pub use block_data::*;
 pub use block_path::*;
+pub use config::*;
 pub use counter::*;
 pub use date_data::*;
 pub use date_map::*;