Add config printing, explain mode, completions, and docs

src/main.rs

@@ -11,9 +11,10 @@ mod report;
 mod utils;
 
 use anyhow::Result;
-use clap::Parser;
+use clap::{CommandFactory, Parser};
+use clap_complete::{generate, Shell};
 
-use crate::cli::Cli;
+use crate::cli::{Cli, CompletionShell};
 
 fn main() -> Result<()> {
     if std::env::args_os().len() == 1 {
@@ -23,12 +24,38 @@ fn main() -> Result<()> {
     }
 
     let cli = Cli::parse();
+
+    if let Some(shell) = cli.completions.clone() {
+        let mut cmd = Cli::command();
+        let shell = match shell {
+            CompletionShell::Bash => Shell::Bash,
+            CompletionShell::Zsh => Shell::Zsh,
+            CompletionShell::Fish => Shell::Fish,
+        };
+        generate(shell, &mut cmd, "mov-renamarr", &mut std::io::stdout());
+        return Ok(());
+    }
+
     let settings = config::build_settings(&cli)?;
 
+    if cli.print_config {
+        let rendered = config::format_settings(&settings)?;
+        println!("{rendered}");
+        return Ok(());
+    }
+
     let report_format = settings.report_format.clone();
     let report_path = settings.report_path.clone();
+    let dry_run_summary = settings.dry_run_summary;
 
     let report = pipeline::run(settings)?;
-    report.write(&report_format, report_path.as_deref())?;
+    if dry_run_summary
+        && report_path.is_none()
+        && matches!(report_format, crate::cli::ReportFormat::Text)
+    {
+        report.write_summary(None)?;
+    } else {
+        report.write(&report_format, report_path.as_deref())?;
+    }
     Ok(())
 }