seela 1.5.1

A fast and customizable tmux session manager.
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use crate::config::FzfConfig;
use std::error::Error;
use std::io::Write;
use std::process::{Command, Stdio};

pub fn select_project(
    projects: &[String],
    config: &FzfConfig,
) -> Result<Option<String>, Box<dyn Error>> {
    let mut cmd = Command::new("fzf");

    if config.preview {
        let binary = config
            .preview_command
            .split_whitespace()
            .next()
            .unwrap_or("");
        let available = Command::new("which")
            .arg(binary)
            .stdout(std::process::Stdio::null())
            .stderr(std::process::Stdio::null())
            .status()
            .is_ok_and(|s| s.success());

        if available {
            cmd.arg("--preview").arg(&config.preview_command);
        } else if !binary.is_empty() {
            eprintln!(
                "seela: preview command '{}' not found, falling back to ls",
                binary
            );
            cmd.arg("--preview").arg("ls {}");
        }
    }

    if let Some(opts) = &config.fzf_opts {
        for opt in opts.split_whitespace() {
            cmd.arg(opt);
        }
    }

    let mut child = cmd.stdin(Stdio::piped()).stdout(Stdio::piped()).spawn()?;

    let mut stdin = child.stdin.take().ok_or("Failed to open fzf stdin")?;
    for project in projects {
        writeln!(stdin, "{}", project)?;
    }
    drop(stdin);

    let output = child.wait_with_output()?;
    if !output.status.success() {
        return Ok(None); // User cancelled fzf
    }

    let selected = String::from_utf8(output.stdout)?.trim().to_string();
    if selected.is_empty() {
        Ok(None)
    } else {
        Ok(Some(selected))
    }
}