use anyhow::Result;

mod common;

use common::cache::*;
use common::common_args::*;
use common::fixture::*;
use common::input_arg::*;
use common::process::*;
use common::program::*;
use common::target::*;
use common::test_dir::*;

//------------------------------------------

const USAGE: &str =
"cache_check 0.9.0

USAGE:
    cache_check [FLAGS] <INPUT>

FLAGS:
        --auto-repair                Auto repair trivial issues.
        --ignore-non-fatal-errors    Only return a non-zero exit code if a fatal error is found.
    -q, --quiet                      Suppress output messages, return only exit code.
        --super-block-only           Only check the superblock.
        --skip-discards              Don't check the discard bitset
        --skip-hints                 Don't check the hint array
    -h, --help                       Prints help information
    -V, --version                    Prints version information

ARGS:
    <INPUT>    Specify the input device to check";

//------------------------------------------

struct CacheCheck;

impl<'a> Program<'a> for CacheCheck {
    fn name() -> &'a str {
        "cache_check"
    }

    fn cmd<I>(args: I) -> duct::Expression
    where
        I: IntoIterator,
        I::Item: Into<std::ffi::OsString>,
    {
        cache_check_cmd(args)
    }

    fn usage() -> &'a str {
        USAGE
    }

    fn arg_type() -> ArgType {
        ArgType::InputArg
    }

    fn bad_option_hint(option: &str) -> String {
        msg::bad_option_hint(option)
    }
}

impl<'a> InputProgram<'a> for CacheCheck {
    fn mk_valid_input(td: &mut TestDir) -> Result<std::path::PathBuf> {
        mk_valid_md(td)
    }

    fn file_not_found() -> &'a str {
        msg::FILE_NOT_FOUND
    }

    fn missing_input_arg() -> &'a str {
        msg::MISSING_INPUT_ARG
    }

    fn corrupted_input() -> &'a str {
        msg::BAD_SUPERBLOCK
    }
}

impl<'a> MetadataReader<'a> for CacheCheck {}

//------------------------------------------

test_accepts_help!(CacheCheck);
test_accepts_version!(CacheCheck);
test_rejects_bad_option!(CacheCheck);

test_missing_input_arg!(CacheCheck);
test_input_file_not_found!(CacheCheck);
test_input_cannot_be_a_directory!(CacheCheck);
test_unreadable_input_file!(CacheCheck);

test_help_message_for_tiny_input_file!(CacheCheck);
test_spot_xml_data!(CacheCheck);
test_corrupted_input_data!(CacheCheck);

//------------------------------------------

#[test]
fn failing_q() -> Result<()> {
    let mut td = TestDir::new()?;
    let md = mk_zeroed_md(&mut td)?;
    let output = run_fail_raw(cache_check_cmd(args!["-q", &md]))?;
    assert_eq!(output.stdout.len(), 0);
    eprintln!("stderr = '{}'", std::str::from_utf8(&output.stderr).unwrap());
    assert_eq!(output.stderr.len(), 0);
    Ok(())
}

#[test]
fn failing_quiet() -> Result<()> {
    let mut td = TestDir::new()?;
    let md = mk_zeroed_md(&mut td)?;
    let output = run_fail_raw(cache_check_cmd(args!["--quiet", &md]))?;
    assert_eq!(output.stdout.len(), 0);
    assert_eq!(output.stderr.len(), 0);
    Ok(())
}

#[test]
fn valid_metadata_passes() -> Result<()> {
    let mut td = TestDir::new()?;
    let md = mk_valid_md(&mut td)?;
    run_ok(cache_check_cmd(args![&md]))?;
    Ok(())
}


// FIXME: put back in, I don't want to add the --debug- arg to the
// tool again, so we should have a little library function for tweaking
// metadata version.

/*
#[test]
fn bad_metadata_version() -> Result<()> {
    let mut td = TestDir::new()?;
    let xml = mk_valid_xml(&mut td)?;
    let md = mk_zeroed_md(&mut td)?;
    run_ok(
        cache_restore_cmd(
        args![
            "-i",
            &xml,
            "-o",
            &md,
            "--debug-override-metadata-version",
            "12345"
        ],
    ))?;
    run_fail(cache_check_cmd(args![&md]))?;
    Ok(())
}
*/