openidea/wit/io.wit

package openidea:plugin@1.0.0;

/// Problems in files, shown in the editor and the Problems view.
interface diagnostics {
    use types.{error, range};

    enum severity {
        error,
        warning,
        info,
        hint,
    }

    record diagnostic {
        range: range,
        severity: severity,
        message: string,
        /// Rule or check id (`LineLength`).
        code: option<string>,
    }

    /// Replaces the plugin's diagnostics for the file at `path` (absolute, in
    /// an open project); an empty list clears them. Requires `project.read`.
    publish: func(path: string, diagnostics: list<diagnostic>) -> result<_, error>;
}

/// HTTP(S) to the hosts granted with `net:<host>`.
interface net {
    use types.{error};

    record header {
        name: string,
        value: string,
    }

    record request {
        method: string,
        /// `https://…`; plain `http://` only to `localhost` / `127.0.0.1`.
        url: string,
        /// `{{secret:<name>}}` in a value is replaced by the plugin's secret
        /// `name` on the way out (requires `secrets`); the plugin never sees it.
        headers: list<header>,
        body: option<list<u8>>,
        /// Default 30 s; the call's own budget applies too.
        timeout-ms: option<u32>,
    }

    record response {
        status: u16,
        headers: list<header>,
        /// At most 8 MiB.
        body: list<u8>,
    }

    /// Fails with `denied` for a host the plugin may not reach, `cancelled`
    /// when a newer request replaced the call or the user cancelled.
    fetch: func(req: request) -> result<response, error>;
}

/// Secrets the user stored for the plugin (Settings › Plugins, kept in the
/// OS keychain). Plugins only use them through `{{secret:<name>}}` in
/// `net` requests. Requires `secrets`.
interface secrets {
    is-set: func(name: string) -> bool;
}

/// One-off runs of programs granted with `process:<program>` (the file the
/// user approved, checked before every run).
interface process {
    use types.{error};
    use workspace.{project};

    record output {
        /// `none` when killed by a signal.
        status: option<s32>,
        /// At most 4 MiB each (the rest is dropped).
        stdout: string,
        stderr: string,
    }

    /// Runs `program` with `args` in `cwd`'s root (else the plugin's data
    /// directory) and waits; cancelled with the task or call. Call it inside
    /// a task for anything slow.
    run: func(program: string, args: list<string>, cwd: option<borrow<project>>, stdin: option<string>) -> result<output, error>;
}