//! Test for `teloxide-macros`

use teloxide_macros::BotCommands;

// Import only trait _methods_, such that we can call `parse`, but we also test
// that proc macros work without the trait being imported.
use teloxide::utils::command::BotCommands as _;

#[test]
fn parse_command_with_args() {
    #[derive(BotCommands, Debug, PartialEq)]
    #[command(rename_rule = "lowercase")]
    enum DefaultCommands {
        Start(String),
        Help,
    }

    let data = "/start arg1 arg2";
    let expected = DefaultCommands::Start("arg1 arg2".to_string());
    let actual = DefaultCommands::parse(data, "").unwrap();
    assert_eq!(actual, expected)
}

#[test]
fn parse_command_with_non_string_arg() {
    #[derive(BotCommands, Debug, PartialEq)]
    #[command(rename_rule = "lowercase")]
    enum DefaultCommands {
        Start(i32),
        Help,
    }

    let data = "/start -50";
    let expected = DefaultCommands::Start("-50".parse().unwrap());
    let actual = DefaultCommands::parse(data, "").unwrap();
    assert_eq!(actual, expected)
}

#[test]
fn attribute_prefix() {
    #[derive(BotCommands, Debug, PartialEq)]
    #[command(rename_rule = "lowercase")]
    enum DefaultCommands {
        #[command(prefix = "!")]
        Start(String),
        Help,
    }

    let data = "!start arg1 arg2";
    let expected = DefaultCommands::Start("arg1 arg2".to_string());
    let actual = DefaultCommands::parse(data, "").unwrap();
    assert_eq!(actual, expected)
}

#[test]
fn many_attributes() {
    #[derive(BotCommands, Debug, PartialEq)]
    #[command(rename_rule = "lowercase")]
    enum DefaultCommands {
        #[command(prefix = "!", description = "desc")]
        Start,
        Help,
    }

    assert_eq!(
        DefaultCommands::Start,
        DefaultCommands::parse("!start", "").unwrap()
    );
    assert_eq!(
        DefaultCommands::descriptions().to_string(),
        "!start — desc\n/help"
    );
}

#[test]
fn global_attributes() {
    #[derive(BotCommands, Debug, PartialEq)]
    #[command(
        prefix = "!",
        rename_rule = "lowercase",
        description = "Bot commands"
    )]
    enum DefaultCommands {
        #[command(prefix = "/")]
        Start,
        Help,
    }

    assert_eq!(
        DefaultCommands::Start,
        DefaultCommands::parse("/start", "MyNameBot").unwrap()
    );
    assert_eq!(
        DefaultCommands::Help,
        DefaultCommands::parse("!help", "MyNameBot").unwrap()
    );
    assert_eq!(
        DefaultCommands::descriptions().to_string(),
        "Bot commands\n\n/start\n!help"
    );
}

#[test]
fn parse_command_with_bot_name() {
    #[derive(BotCommands, Debug, PartialEq)]
    #[command(rename_rule = "lowercase")]
    enum DefaultCommands {
        #[command(prefix = "/")]
        Start,
        Help,
    }

    assert_eq!(
        DefaultCommands::Start,
        DefaultCommands::parse("/start@MyNameBot", "MyNameBot").unwrap()
    );
}

#[test]
fn parse_with_split() {
    #[derive(BotCommands, Debug, PartialEq)]
    #[command(rename_rule = "lowercase")]
    #[command(parse_with = "split")]
    enum DefaultCommands {
        Start(u8, String),
        Help,
    }

    assert_eq!(
        DefaultCommands::Start(10, "hello".to_string()),
        DefaultCommands::parse("/start 10 hello", "").unwrap()
    );
}

#[test]
fn parse_with_split2() {
    #[derive(BotCommands, Debug, PartialEq)]
    #[command(rename_rule = "lowercase")]
    #[command(parse_with = "split", separator = "|")]
    enum DefaultCommands {
        Start(u8, String),
        Help,
    }

    assert_eq!(
        DefaultCommands::Start(10, "hello".to_string()),
        DefaultCommands::parse("/start 10|hello", "").unwrap()
    );
}

#[test]
fn parse_custom_parser() {
    mod parser {
        use teloxide::utils::command::ParseError;

        pub fn custom_parse_function(
            s: String,
        ) -> Result<(u8, String), ParseError> {
            let vec = s.split_whitespace().collect::<Vec<_>>();
            let (left, right) = match vec.as_slice() {
                [l, r] => (l, r),
                _ => {
                    return Err(ParseError::IncorrectFormat(
                        "might be 2 arguments!".into(),
                    ))
                }
            };
            left.parse::<u8>().map(|res| (res, (*right).to_string())).map_err(
                |_| {
                    ParseError::Custom(
                        "First argument must be a integer!".to_owned().into(),
                    )
                },
            )
        }
    }

    use parser::custom_parse_function;

    #[derive(BotCommands, Debug, PartialEq)]
    #[command(rename_rule = "lowercase")]
    enum DefaultCommands {
        #[command(parse_with = custom_parse_function)]
        Start(u8, String),

        // Test <https://github.com/teloxide/teloxide/issues/668>.
        #[command(parse_with = parser::custom_parse_function)]
        TestPath(u8, String),

        Help,
    }

    assert_eq!(
        DefaultCommands::Start(10, "hello".to_string()),
        DefaultCommands::parse("/start 10 hello", "").unwrap()
    );
    assert_eq!(
        DefaultCommands::TestPath(10, "hello".to_string()),
        DefaultCommands::parse("/testpath 10 hello", "").unwrap()
    );
}

#[test]
fn parse_named_fields() {
    #[derive(BotCommands, Debug, PartialEq)]
    #[command(rename_rule = "lowercase")]
    #[command(parse_with = "split")]
    enum DefaultCommands {
        Start { num: u8, data: String },
        Help,
    }

    assert_eq!(
        DefaultCommands::Start { num: 10, data: "hello".to_string() },
        DefaultCommands::parse("/start 10 hello", "").unwrap()
    );
}

#[test]
fn descriptions_off() {
    #[derive(BotCommands, Debug, PartialEq)]
    #[command(rename_rule = "lowercase")]
    enum DefaultCommands {
        #[command(description = "off")]
        Start,
        Help,
    }

    assert_eq!(DefaultCommands::descriptions().to_string(), "/help".to_owned());
}

#[test]
fn rename_rules() {
    #[derive(BotCommands, Debug, PartialEq)]
    enum DefaultCommands {
        #[command(rename_rule = "lowercase")]
        AaaAaa,
        #[command(rename_rule = "UPPERCASE")]
        BbbBbb,
        #[command(rename_rule = "PascalCase")]
        CccCcc,
        #[command(rename_rule = "camelCase")]
        DddDdd,
        #[command(rename_rule = "snake_case")]
        EeeEee,
        #[command(rename_rule = "SCREAMING_SNAKE_CASE")]
        FffFff,
        #[command(rename_rule = "kebab-case")]
        GggGgg,
        #[command(rename_rule = "SCREAMING-KEBAB-CASE")]
        HhhHhh,
        #[command(rename = "Bar")]
        Foo,
    }

    assert_eq!(
        DefaultCommands::AaaAaa,
        DefaultCommands::parse("/aaaaaa", "").unwrap()
    );
    assert_eq!(
        DefaultCommands::BbbBbb,
        DefaultCommands::parse("/BBBBBB", "").unwrap()
    );
    assert_eq!(
        DefaultCommands::CccCcc,
        DefaultCommands::parse("/CccCcc", "").unwrap()
    );
    assert_eq!(
        DefaultCommands::DddDdd,
        DefaultCommands::parse("/dddDdd", "").unwrap()
    );
    assert_eq!(
        DefaultCommands::EeeEee,
        DefaultCommands::parse("/eee_eee", "").unwrap()
    );
    assert_eq!(
        DefaultCommands::FffFff,
        DefaultCommands::parse("/FFF_FFF", "").unwrap()
    );
    assert_eq!(
        DefaultCommands::GggGgg,
        DefaultCommands::parse("/ggg-ggg", "").unwrap()
    );
    assert_eq!(
        DefaultCommands::HhhHhh,
        DefaultCommands::parse("/HHH-HHH", "").unwrap()
    );
    assert_eq!(
        DefaultCommands::Foo,
        DefaultCommands::parse("/Bar", "").unwrap()
    );

    assert_eq!(
        "/aaaaaa\n/BBBBBB\n/CccCcc\n/dddDdd\n/eee_eee\n/FFF_FFF\n/ggg-ggg\n/\
         HHH-HHH\n/Bar",
        DefaultCommands::descriptions().to_string()
    );
}