lazytask 0.5.0

A task manager built for AI coding agents — plain markdown files, strict CLI, keyboard-driven TUI
Documentation 
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use super::{DomainError, TITLE_CHAR_LIMIT, normalize_escaped_newlines, normalize_file_name};

/// Validates task titles for required content, length, and file-name compatibility.
pub fn validate_title(title: &str) -> Result<(), DomainError> {
    if title.trim().is_empty() {
        return Err(DomainError::ValidationError(
            "title is required".to_string(),
        ));
    }

    if title.trim().len() > TITLE_CHAR_LIMIT {
        return Err(DomainError::ValidationError(
            "title must be at most 50 characters".to_string(),
        ));
    }

    if normalize_file_name(title)?.is_empty() {
        return Err(DomainError::ValidationError(
            "title must produce a valid file name".to_string(),
        ));
    }

    Ok(())
}

/// Validates task details according to command-level requirements.
///
/// Some flows require details at creation time while others allow blank details.
pub fn validate_details(details: &str, required: bool) -> Result<(), DomainError> {
    if required && details.trim().is_empty() {
        return Err(DomainError::ValidationError(
            "details is required".to_string(),
        ));
    }

    Ok(())
}

/// Normalizes and validates discard notes to a compact single-field payload.
///
/// Returns the trimmed note so callers can store it directly without additional cleanup.
pub fn validate_discard_note(discard_note: &str) -> Result<String, DomainError> {
    let normalized = normalize_escaped_newlines(discard_note);
    let trimmed = normalized.trim();
    let len = trimmed.chars().count();
    if len == 0 || len > 120 {
        return Err(DomainError::ValidationError(
            "discard note must be 1-120 characters".to_string(),
        ));
    }

    Ok(trimmed.to_string())
}