add a function that hopefully gets the home folder, and a function that *should* make the config file

Cargo.toml

@@ -6,3 +6,8 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+clap = { version = "4.3.3", features = ["derive"] }
+iced = "0.9.0"
+regex = "1.8.4"
+reqwest = "0.11.18"
+scraper = "0.16.0"

src/lib.rs

@@ -0,0 +1,39 @@
+use std::fs;
+
+pub struct ConfigFile {
+    pub latest_date: String,
+    pub cache_folder: String,
+}
+
+pub fn get_home() -> String {
+    let home = match std::env::consts::OS {
+        "linux" => std::env::var("HOME").expect("how is there not a $HOME"),
+        "windows" => std::env::var("userprofile").expect("yell at me if this doesn't work please i'm not going to touch windows"),
+        _ => std::env::var("HOME").expect("if this doesn't work, you're probably on macos, which i literally cannot test on"),
+    };
+    // println!("{home}");
+    home
+}
+
+pub fn create_config(file: String) -> bool {
+    let replaced = file.replace('~', &get_home()[..]);
+    let mut paths = replaced.split('/').collect::<Vec<&str>>();
+    let filename = paths.pop();
+    let path = paths.join("/");
+    let file_path = std::path::Path::new(&path);
+    let file_contents = "{\"latest_date\": \"20021104\",\"cache_folder\": \"~/.cache/ggg\"}"; 
+    if let Some(p) = file_path.parent() { 
+        fs::create_dir_all(p).expect("couldn't create needed folders")
+    };
+
+    let cfg_path = std::path::Path::new(format!("{}/{}", file_path.display(), filename.expect("filename somehow died, if you know how please tell me")));
+
+    if cfg_path.exists() {
+        false
+    } else {
+
+        fs::write(cfg_path, file_contents).expect("couldn't write to config file");
+        true
+    }
+
+}

src/main.rs

@@ -1,3 +1,16 @@
-fn main() {
-    println!("Hello, world!");
+use clap::Parser;
+
+#[derive(Parser, Debug)]
+#[command(author, version, about, long_about = None)]
+struct Args {
+    #[arg(short, long, default_value = "~/.config/ggg/config.json")]
+    config_file: String,
+}
+
+fn main() {
+    let args = Args::parse();
+
+    let config_file = args.config_file;
+
+    ggg::create_config(config_file);
 }