use clap::{builder::PossibleValue, error::ErrorKind, Arg, ArgAction, Command};

#[cfg(feature = "error-context")]
use super::utils;

#[test]
fn possible_values_of_positional() {
    let m = Command::new("possible_values")
        .arg(Arg::new("positional").index(1).value_parser(["test123"]))
        .try_get_matches_from(vec!["myprog", "test123"]);

    assert!(m.is_ok(), "{}", m.unwrap_err());
    let m = m.unwrap();

    assert!(m.contains_id("positional"));
    assert_eq!(
        m.get_one::<String>("positional").map(|v| v.as_str()),
        Some("test123")
    );
}

#[test]
fn possible_value_arg_value() {
    let m = Command::new("possible_values")
        .arg(
            Arg::new("arg_value")
                .index(1)
                .value_parser([PossibleValue::new("test123")
                    .hide(false)
                    .help("It's just a test")]),
        )
        .try_get_matches_from(vec!["myprog", "test123"]);

    assert!(m.is_ok(), "{}", m.unwrap_err());
    let m = m.unwrap();

    assert!(m.contains_id("arg_value"));
    assert_eq!(
        m.get_one::<String>("arg_value").map(|v| v.as_str()),
        Some("test123")
    );
}

#[test]
fn possible_values_of_positional_fail() {
    let m = Command::new("possible_values")
        .arg(Arg::new("positional").index(1).value_parser(["test123"]))
        .try_get_matches_from(vec!["myprog", "notest"]);

    assert!(m.is_err());
    assert_eq!(m.unwrap_err().kind(), ErrorKind::InvalidValue);
}

#[test]
fn possible_values_of_positional_multiple() {
    let m = Command::new("possible_values")
        .arg(
            Arg::new("positional")
                .index(1)
                .action(ArgAction::Set)
                .value_parser(["test123", "test321"])
                .num_args(1..),
        )
        .try_get_matches_from(vec!["myprog", "test123", "test321"]);

    assert!(m.is_ok(), "{}", m.unwrap_err());
    let m = m.unwrap();

    assert!(m.contains_id("positional"));
    assert_eq!(
        m.get_many::<String>("positional")
            .unwrap()
            .map(|v| v.as_str())
            .collect::<Vec<_>>(),
        vec!["test123", "test321"]
    );
}

#[test]
fn possible_values_of_positional_multiple_fail() {
    let m = Command::new("possible_values")
        .arg(
            Arg::new("positional")
                .index(1)
                .action(ArgAction::Set)
                .value_parser(["test123", "test321"])
                .num_args(1..),
        )
        .try_get_matches_from(vec!["myprog", "test123", "notest"]);

    assert!(m.is_err());
    assert_eq!(m.unwrap_err().kind(), ErrorKind::InvalidValue);
}

#[test]
fn possible_values_of_option() {
    let m = Command::new("possible_values")
        .arg(
            Arg::new("option")
                .short('o')
                .long("option")
                .action(ArgAction::Set)
                .value_parser(["test123"]),
        )
        .try_get_matches_from(vec!["myprog", "--option", "test123"]);

    assert!(m.is_ok(), "{}", m.unwrap_err());
    let m = m.unwrap();

    assert!(m.contains_id("option"));
    assert_eq!(
        m.get_one::<String>("option").map(|v| v.as_str()),
        Some("test123")
    );
}

#[test]
fn possible_values_of_option_fail() {
    let m = Command::new("possible_values")
        .arg(
            Arg::new("option")
                .short('o')
                .long("option")
                .action(ArgAction::Set)
                .value_parser(["test123"]),
        )
        .try_get_matches_from(vec!["myprog", "--option", "notest"]);

    assert!(m.is_err());
    assert_eq!(m.unwrap_err().kind(), ErrorKind::InvalidValue);
}

#[test]
fn possible_values_of_option_multiple() {
    let m = Command::new("possible_values")
        .arg(
            Arg::new("option")
                .short('o')
                .long("option")
                .action(ArgAction::Set)
                .value_parser(["test123", "test321"])
                .action(ArgAction::Append),
        )
        .try_get_matches_from(vec!["", "--option", "test123", "--option", "test321"]);

    assert!(m.is_ok(), "{}", m.unwrap_err());
    let m = m.unwrap();

    assert!(m.contains_id("option"));
    assert_eq!(
        m.get_many::<String>("option")
            .unwrap()
            .map(|v| v.as_str())
            .collect::<Vec<_>>(),
        vec!["test123", "test321"]
    );
}

#[test]
fn possible_values_of_option_multiple_fail() {
    let m = Command::new("possible_values")
        .arg(
            Arg::new("option")
                .short('o')
                .long("option")
                .action(ArgAction::Set)
                .value_parser(["test123", "test321"])
                .action(ArgAction::Append),
        )
        .try_get_matches_from(vec!["", "--option", "test123", "--option", "notest"]);

    assert!(m.is_err());
    assert_eq!(m.unwrap_err().kind(), ErrorKind::InvalidValue);
}

#[test]
#[cfg(feature = "error-context")]
fn possible_values_output() {
    #[cfg(feature = "suggestions")]
    static PV_ERROR: &str = "\
error: invalid value 'slo' for '-O <option>'
  [possible values: slow, fast, \"ludicrous speed\"]

  note: value 'slow' exists

For more information, try '--help'.
";

    #[cfg(not(feature = "suggestions"))]
    static PV_ERROR: &str = "\
error: invalid value 'slo' for '-O <option>'
  [possible values: slow, fast, \"ludicrous speed\"]

For more information, try '--help'.
";

    utils::assert_output(
        Command::new("test").arg(
            Arg::new("option")
                .short('O')
                .action(ArgAction::Set)
                .value_parser(["slow", "fast", "ludicrous speed"]),
        ),
        "clap-test -O slo",
        PV_ERROR,
        true,
    );
}

#[test]
#[cfg(feature = "error-context")]
fn possible_values_alias_output() {
    #[cfg(feature = "suggestions")]
    static PV_ERROR: &str = "\
error: invalid value 'slo' for '-O <option>'
  [possible values: slow, fast, \"ludicrous speed\"]

  note: value 'slow' exists

For more information, try '--help'.
";

    #[cfg(not(feature = "suggestions"))]
    static PV_ERROR: &str = "\
error: invalid value 'slo' for '-O <option>'
  [possible values: slow, fast, \"ludicrous speed\"]

For more information, try '--help'.
";

    utils::assert_output(
        Command::new("test").arg(
            Arg::new("option")
                .short('O')
                .action(ArgAction::Set)
                .value_parser([
                    "slow".into(),
                    PossibleValue::new("fast").alias("fost"),
                    PossibleValue::new("ludicrous speed").aliases(["ls", "lcs"]),
                ]),
        ),
        "clap-test -O slo",
        PV_ERROR,
        true,
    );
}

#[test]
#[cfg(feature = "error-context")]
fn possible_values_hidden_output() {
    #[cfg(feature = "suggestions")]
    static PV_ERROR: &str = "\
error: invalid value 'slo' for '-O <option>'
  [possible values: slow, fast, \"ludicrous speed\"]

  note: value 'slow' exists

For more information, try '--help'.
";

    #[cfg(not(feature = "suggestions"))]
    static PV_ERROR: &str = "\
error: invalid value 'slo' for '-O <option>'
  [possible values: slow, fast, \"ludicrous speed\"]

For more information, try '--help'.
";

    utils::assert_output(
        Command::new("test").arg(
            Arg::new("option")
                .short('O')
                .action(ArgAction::Set)
                .value_parser([
                    "slow".into(),
                    "fast".into(),
                    PossibleValue::new("ludicrous speed"),
                    PossibleValue::new("forbidden speed").hide(true),
                ]),
        ),
        "clap-test -O slo",
        PV_ERROR,
        true,
    );
}

#[test]
#[cfg(feature = "error-context")]
fn escaped_possible_values_output() {
    #[cfg(feature = "suggestions")]
    static PV_ERROR_ESCAPED: &str = "\
error: invalid value 'ludicrous' for '-O <option>'
  [possible values: slow, fast, \"ludicrous speed\"]

  note: value 'ludicrous speed' exists

For more information, try '--help'.
";

    #[cfg(not(feature = "suggestions"))]
    static PV_ERROR_ESCAPED: &str = "\
error: invalid value 'ludicrous' for '-O <option>'
  [possible values: slow, fast, \"ludicrous speed\"]

For more information, try '--help'.
";

    utils::assert_output(
        Command::new("test").arg(
            Arg::new("option")
                .short('O')
                .action(ArgAction::Set)
                .value_parser(["slow", "fast", "ludicrous speed"]),
        ),
        "clap-test -O ludicrous",
        PV_ERROR_ESCAPED,
        true,
    );
}

#[test]
#[cfg(feature = "error-context")]
fn missing_possible_value_error() {
    static MISSING_PV_ERROR: &str = "\
error: a value is required for '-O <option>' but none was supplied
  [possible values: slow, fast, \"ludicrous speed\"]

For more information, try '--help'.
";

    utils::assert_output(
        Command::new("test").arg(
            Arg::new("option")
                .short('O')
                .action(ArgAction::Set)
                .value_parser([
                    "slow".into(),
                    PossibleValue::new("fast").alias("fost"),
                    PossibleValue::new("ludicrous speed"),
                    PossibleValue::new("forbidden speed").hide(true),
                ]),
        ),
        "clap-test -O",
        MISSING_PV_ERROR,
        true,
    );
}

#[test]
fn alias() {
    let m = Command::new("pv")
        .arg(
            Arg::new("option")
                .short('o')
                .long("option")
                .action(ArgAction::Set)
                .value_parser([PossibleValue::new("test123").alias("123"), "test321".into()])
                .ignore_case(true),
        )
        .try_get_matches_from(vec!["pv", "--option", "123"]);

    assert!(m.is_ok(), "{}", m.unwrap_err());
    assert!(m
        .unwrap()
        .get_one::<String>("option")
        .map(|v| v.as_str())
        .unwrap()
        .eq("123"));
}

#[test]
fn aliases() {
    let m = Command::new("pv")
        .arg(
            Arg::new("option")
                .short('o')
                .long("option")
                .action(ArgAction::Set)
                .value_parser([
                    PossibleValue::new("test123").aliases(["1", "2", "3"]),
                    "test321".into(),
                ])
                .ignore_case(true),
        )
        .try_get_matches_from(vec!["pv", "--option", "2"]);

    assert!(m.is_ok(), "{}", m.unwrap_err());
    assert!(m
        .unwrap()
        .get_one::<String>("option")
        .map(|v| v.as_str())
        .unwrap()
        .eq("2"));
}

#[test]
fn ignore_case() {
    let m = Command::new("pv")
        .arg(
            Arg::new("option")
                .short('o')
                .long("option")
                .action(ArgAction::Set)
                .value_parser(["test123", "test321"])
                .ignore_case(true),
        )
        .try_get_matches_from(vec!["pv", "--option", "TeSt123"]);

    assert!(m.is_ok(), "{}", m.unwrap_err());
    assert!(m
        .unwrap()
        .get_one::<String>("option")
        .map(|v| v.as_str())
        .unwrap()
        .eq_ignore_ascii_case("test123"));
}

#[test]
fn ignore_case_fail() {
    let m = Command::new("pv")
        .arg(
            Arg::new("option")
                .short('o')
                .long("option")
                .action(ArgAction::Set)
                .value_parser(["test123", "test321"]),
        )
        .try_get_matches_from(vec!["pv", "--option", "TeSt123"]);

    assert!(m.is_err());
    assert_eq!(m.unwrap_err().kind(), ErrorKind::InvalidValue);
}

#[test]
fn ignore_case_multiple() {
    let m = Command::new("pv")
        .arg(
            Arg::new("option")
                .short('o')
                .long("option")
                .action(ArgAction::Set)
                .value_parser(["test123", "test321"])
                .num_args(1..)
                .ignore_case(true),
        )
        .try_get_matches_from(vec!["pv", "--option", "TeSt123", "teST123", "tESt321"]);

    assert!(m.is_ok(), "{}", m.unwrap_err());
    assert_eq!(
        m.unwrap()
            .get_many::<String>("option")
            .unwrap()
            .map(|v| v.as_str())
            .collect::<Vec<_>>(),
        ["TeSt123", "teST123", "tESt321"]
    );
}

#[test]
fn ignore_case_multiple_fail() {
    let m = Command::new("pv")
        .arg(
            Arg::new("option")
                .short('o')
                .long("option")
                .action(ArgAction::Set)
                .value_parser(["test123", "test321"])
                .num_args(1..),
        )
        .try_get_matches_from(vec!["pv", "--option", "test123", "teST123", "test321"]);

    assert!(m.is_err());
    assert_eq!(m.unwrap_err().kind(), ErrorKind::InvalidValue);
}