use crate::commands::Command;

use crate::ui::utf8_to_local;

use crate::ui::Ui;

use hg::repo::Repo;

use micro_timer::timed;

pub const HELP_TEXT: &str = "

Dump the contents of a data file revision

";

pub struct DebugDataCommand<'a> {

    rev: &'a str,

    kind: DebugDataKind,

}

impl<'a> DebugDataCommand<'a> {

    pub fn new(rev: &'a str, kind: DebugDataKind) -> Self {

        DebugDataCommand { rev, kind }

    }

}

impl<'a> Command for DebugDataCommand<'a> {

    #[timed]

    fn run(&self, ui: &Ui) -> Result<(), CommandError> {

        let repo = Repo::find()?;

        let data = debug_data(&repo, self.rev, self.kind)

            .map_err(|e| to_command_error(self.rev, e))?;

        let mut stdout = ui.stdout_buffer();

        stdout.write_all(&data)?;

        stdout.flush()?;

        Ok(())

    }

}

/// Convert operation errors to command errors

fn to_command_error(rev: &str, err: DebugDataError) -> CommandError {

                utf8_to_local(&format!(

                    "abort: unsupported revlog version {}\n",

                    version

                ))

                .into(),

                utf8_to_local(&format!(

                    "abort: unknow revlog dataformat {:?}\n",

                    format

                ))

                .into(),

    }

}