//! `GET` and `PUT /api/agents/{name}/agents-md`: an agent's `AGENTS.md`,
//! read from the copy its harness publishes and edited by a diff the harness
//! applies.

use serde::{Deserialize, Serialize};

/// Success body of `GET /api/agents/{name}/agents-md`.
#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
#[cfg_attr(feature = "schema", derive(utoipa::ToSchema))]
pub struct AgentsMdView {
    /// The file's text as the agent last published it; `""` for an agent
    /// with no `AGENTS.md`.
    pub content: String,
    /// The git blob id of that text, what `git hash-object` prints for it.
    pub revision: String,
}

/// Body of `PUT /api/agents/{name}/agents-md`.
#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
#[cfg_attr(feature = "schema", derive(utoipa::ToSchema))]
pub struct AgentsMdEdit {
    /// The [`AgentsMdView::revision`] the diff was made against.
    pub base_revision: String,
    /// A unified diff as `git diff` writes it, naming `a/AGENTS.md` and
    /// `b/AGENTS.md`.
    pub diff: String,
}

/// Success body of `PUT /api/agents/{name}/agents-md`.
#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
#[cfg_attr(feature = "schema", derive(utoipa::ToSchema))]
pub struct AgentsMdSaved {
    /// The file's revision after the edit.
    pub revision: String,
}

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

    #[test]
    fn an_edit_round_trips() {
        let edit = AgentsMdEdit {
            base_revision: "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391".to_owned(),
            diff: "--- a/AGENTS.md\n".to_owned(),
        };
        let wire = r#"{"base_revision":"e69de29bb2d1d6434b8b29ae775ad8c2e48c5391","diff":"--- a/AGENTS.md\n"}"#;
        assert_eq!(serde_json::to_string(&edit).unwrap(), wire);
        assert_eq!(serde_json::from_str::<AgentsMdEdit>(wire).unwrap(), edit);
    }
}