everruns-cli 0.18.1

// Output formatting for CLI

use serde::Serialize;

#[derive(Clone, Copy)]
pub enum OutputFormat {
    Text,
    Json,
    Yaml,
}

impl OutputFormat {
    pub fn from_str(s: &str) -> Self {
        match s {
            "json" => OutputFormat::Json,
            "yaml" => OutputFormat::Yaml,
            _ => OutputFormat::Text,
        }
    }

    pub fn print_value<T: Serialize>(&self, value: &T) {
        match self {
            OutputFormat::Json => match serde_json::to_string_pretty(value) {
                Ok(json) => println!("{}", json),
                Err(err) => eprintln!("Failed to serialize JSON output: {}", err),
            },
            OutputFormat::Yaml => match serde_yaml::to_string(value) {
                Ok(yaml) => println!("{}", yaml.trim_end()),
                Err(err) => eprintln!("Failed to serialize YAML output: {}", err),
            },
            OutputFormat::Text => {
                // Text format is handled by each command
            }
        }
    }

    pub fn is_text(&self) -> bool {
        matches!(self, OutputFormat::Text)
    }
}

/// Print a simple key-value pair for text output
pub fn print_field(label: &str, value: &str) {
    println!("{:<14} {}", format!("{}:", label), value);
}

/// Print a table header
pub fn print_table_header(columns: &[(&str, usize)]) {
    let header: String = columns
        .iter()
        .map(|(name, width)| format!("{:<width$}", name, width = width))
        .collect::<Vec<_>>()
        .join("  ");
    println!("{}", header);
}

/// Print a table row
pub fn print_table_row(values: &[(&str, usize)]) {
    let row: String = values
        .iter()
        .map(|(val, width)| {
            let s = truncate_table_cell(val, *width);
            format!("{:<width$}", s, width = width)
        })
        .collect::<Vec<_>>()
        .join("  ");
    println!("{}", row);
}

fn truncate_table_cell(val: &str, width: usize) -> String {
    if val.len() <= width {
        return val.to_string();
    }

    let max_prefix_len = width.saturating_sub(3);
    let mut end = max_prefix_len;
    while !val.is_char_boundary(end) {
        end -= 1;
    }
    format!("{}...", &val[..end])
}

/// Format a table row (returns string instead of printing)
#[cfg(test)]
fn format_table_row(values: &[(&str, usize)]) -> String {
    values
        .iter()
        .map(|(val, width)| {
            let s = truncate_table_cell(val, *width);
            format!("{:<width$}", s, width = width)
        })
        .collect::<Vec<_>>()
        .join("  ")
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_output_format_from_str() {
        assert!(matches!(OutputFormat::from_str("json"), OutputFormat::Json));
        assert!(matches!(OutputFormat::from_str("yaml"), OutputFormat::Yaml));
        assert!(matches!(OutputFormat::from_str("text"), OutputFormat::Text));
        assert!(matches!(
            OutputFormat::from_str("unknown"),
            OutputFormat::Text
        ));
        assert!(matches!(OutputFormat::from_str(""), OutputFormat::Text));
    }

    #[test]
    fn test_output_format_is_text() {
        assert!(OutputFormat::Text.is_text());
        assert!(!OutputFormat::Json.is_text());
        assert!(!OutputFormat::Yaml.is_text());
    }

    #[test]
    fn test_format_table_row_normal() {
        let row = format_table_row(&[("hello", 10), ("world", 10)]);
        assert_eq!(row, "hello       world     ");
    }

    #[test]
    fn test_format_table_row_truncation() {
        let row = format_table_row(&[("verylongtext", 8)]);
        assert_eq!(row, "veryl...");
    }

    #[test]
    fn test_format_table_row_truncates_on_char_boundary() {
        let row = format_table_row(&[("aaaaaaaaaaaaaaaaaaaaaaaaa😀", 28)]);
        assert_eq!(row, "aaaaaaaaaaaaaaaaaaaaaaaaa...");
    }

    #[test]
    fn test_format_table_row_truncates_when_boundary_is_inside_char() {
        let row = format_table_row(&[("aaaaaaaaaaaaaaaaaaaaaaaaa😀z", 29)]);
        assert_eq!(row, "aaaaaaaaaaaaaaaaaaaaaaaaa... ");
    }

    #[test]
    fn test_format_table_row_exact_width() {
        let row = format_table_row(&[("exact", 5)]);
        assert_eq!(row, "exact");
    }
}