//! Markdown content value object.

use serde::{Deserialize, Serialize};

/// A Markdown document — the content of an agent context (`.md`) or a template.
///
/// This is a thin newtype: the domain treats Markdown as opaque text and does
/// not parse it. It exists to give the content a meaningful type at API
/// boundaries (vs. a bare `String`).
#[derive(Debug, Clone, PartialEq, Eq, Default, Serialize, Deserialize)]
#[serde(transparent)]
pub struct MarkdownDoc(String);

impl MarkdownDoc {
    /// Wraps raw Markdown content (empty content is permitted).
    #[must_use]
    pub fn new(content: impl Into<String>) -> Self {
        Self(content.into())
    }

    /// Returns the content as a string slice.
    #[must_use]
    pub fn as_str(&self) -> &str {
        &self.0
    }

    /// Consumes the document, returning its content.
    #[must_use]
    pub fn into_string(self) -> String {
        self.0
    }

    /// Returns `true` if the document is empty.
    #[must_use]
    pub fn is_empty(&self) -> bool {
        self.0.is_empty()
    }
}

impl From<String> for MarkdownDoc {
    fn from(s: String) -> Self {
        Self(s)
    }
}