feat: implement delete subcommand

Author: replydev

src/arguments/delete.rs

@@ -0,0 +1,72 @@
+use std::io::{self};
+
+use clap::Args;
+use color_eyre::eyre::eyre;
+
+use crate::otp::otp_element::OTPDatabase;
+
+use super::SubcommandExecutor;
+
+#[derive(Args)]
+pub struct DeleteArgs {
+    /// Code Index
+    #[arg(short, long, required_unless_present_any=["issuer", "label"])]
+    pub index: Option<usize>,
+
+    /// Issuer of the first matching code that will be deleted
+    #[arg(short = 's', long, required_unless_present_any=["index", "label"])]
+    pub issuer: Option<String>,
+
+    /// Label of the first matching code that will be deleted
+    #[arg(short, long, required_unless_present_any=["index","issuer"])]
+    pub label: Option<String>,
+}
+
+impl SubcommandExecutor for DeleteArgs {
+    fn run_command(self, mut otp_database: OTPDatabase) -> color_eyre::Result<OTPDatabase> {
+        let index_to_delete = self
+            .index
+            .and_then(|i| i.checked_sub(1))
+            .or_else(|| get_first_matching_element(&otp_database, &self))
+            .ok_or(eyre!("No code has been found using the given arguments"))?;
+
+        let mut output = String::with_capacity(1);
+
+        let element = otp_database.elements_ref().get(index_to_delete).unwrap();
+        println!(
+            "Are you sure you want to delete the {}th code ({}, {}) [Y,N]: ",
+            index_to_delete, element.issuer, element.label
+        );
+
+        io::stdin().read_line(&mut output)?;
+
+        if output.eq_ignore_ascii_case("y") {
+            otp_database.delete_element(index_to_delete);
+            Ok(otp_database)
+        } else {
+            Err(eyre!("Operation interrupt by the user"))
+        }
+    }
+}
+
+fn get_first_matching_element(
+    otp_database: &OTPDatabase,
+    delete_args: &DeleteArgs,
+) -> Option<usize> {
+    otp_database
+        .elements_ref()
+        .iter()
+        .enumerate()
+        .find(|(_, element)| {
+            element.issuer.contains(
+                delete_args
+                    .issuer
+                    .as_ref()
+                    .map(|s| s.as_str())
+                    .unwrap_or(""),
+            ) && element
+                .label
+                .contains(delete_args.label.as_ref().map(|s| s.as_str()).unwrap_or(""))
+        })
+        .map(|(index, _)| index)
+}

src/arguments/mod.rs

@@ -10,6 +10,7 @@ use self::{
 };
 
 mod add;
+mod delete;
 mod edit;
 mod export;
 mod extract;