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//! # base_emoji
//!
//! Convert everything to Emojis.
//!
//! 🐫🔦🔥🎲🐬🍀🍟🔋🐬🎲🐬🍀🎁🍟💧👂🔥🚪🔋🍟🔦🔋🚗👣🔦🌍👂🍤🐗
//!
//! Reimplementation of [base_emoji](https://github.com/pfrazee/base-emoji) (JavaScript).
//!
//! ## Example
//!
//! ```rust
//! let input = [0xde, 0xad, 0xbe, 0xef];
//! let output = "❄️🐼🚓👅";
//!
//! assert_eq!(base_emoji::to_string(&input), output);
//! ```
//!
//! ## Encoding (same as original implementation)
//!
//! Citing [the README](https://github.com/pfrazee/base-emoji/blob/04b6c1e24ae5071804285cb358162628ea4a9bc8/README.md):
//!
//! > The emojis used are in `emojis.json`. There are 843 emojis there, but the
//! > converter reads sequences of 8 bits at a time, and so only maps the value to
//! > the first 256 of them. To stay consistent with other renderings, make sure you
//! > don't change the order of your emojis.json.
//!
//! ## License
//!
//! MIT. See included `LICENSE` file.
extern crate phf;

include!(concat!(env!("OUT_DIR"), "/emojis.rs"));

/// Encode buffer as a base-emoji string
///
/// ```rust
/// let input = [0xde, 0xad, 0xbe, 0xef];
/// let output = "❄️🐼🚓👅";
///
/// assert_eq!(base_emoji::to_string(&input), output);
/// ```
pub fn to_string<T: AsRef<[u8]>>(buf: T) -> String {
    buf
        .as_ref()
        .iter()
        .map(|c| EMOJIS.get(c).unwrap().0)
        .collect::<Vec<_>>()
        .concat()
}

/// Encode buffer as a base-emoji buffer
///
/// ```rust
/// let input = [0xde, 0xad, 0xbe, 0xef];
/// let output = "❄️🐼🚓👅".as_bytes();
///
/// assert_eq!(base_emoji::to_bytes(&input), output);
/// ```
pub fn to_bytes<T: AsRef<[u8]>>(buf: T) -> Vec<u8> {
    to_string(buf).into_bytes()
}

/// Encode buffer as a string of emoji names
///
/// ```rust
/// let input = [0xde, 0xad, 0xbe, 0xef];
/// let output = ":snowflake::panda_face::police_car::tongue:";
/// assert_eq!(base_emoji::to_names(&input), output);
/// ```
pub fn to_names<T: AsRef<[u8]>>(buf: T) -> String {
    to_custom(buf, |_, name| format!(":{}:", name))
}

/// Encode buffer as custom-mapped string
///
/// ```rust
/// let input = [0xde];
/// let output = "<img src='/img/snowflake.png' alt='❄️' title='snowflake'>";
/// assert_eq!(
///     base_emoji::to_custom(&input, |ch, name| {
///         format!("<img src='/img/{}.png' alt='{}' title='{}'>",
///                 name, ch, name)
///     }),
///     output);
/// ```
pub fn to_custom<T: AsRef<[u8]>, F: Fn(&str, &str) -> String>(buf: T, f: F) -> String {
    buf
        .as_ref()
        .iter()
        .map(|c| {
            let emoji = EMOJIS.get(c).unwrap();
            f(emoji.0, emoji.1)
        })
        .collect::<Vec<_>>()
        .concat()
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn long() {
        let res = "💯🔢👍👎🎱🅰🚡✈️👽🚑⚓️👼💢😠🐜🍎⬇️⬅️➡️⬆️🎨🏧👶🍼🎈🎍🍌‼️📊💈🏀🛀🔋🐻🐝🍺🐞🔔🚴👙🎂🃏🌼📘🚙💙🐗⛵️💣📖📚💥👢💐🎳👦🍞👰💼💔🐛💡🚌👤🌵🍰📆🐫🍬🚗🐈💿🏁🍒🐔🍫🎄👏🎬☁️🍸☕️💻🎊🚧🍪🌽👫🐄🐊👑🔮💘🌀💃🎯💨🌳💫🐕💵🐬🍩🚪💧👂🌍👓👊👣🔥🔦💾🏈🍀🍤🍟🐸🎲💎👻🎁🌐⛳️🍇🍏🎸🔫🍔🔨👜🐣🌿🔆👠🐴⌛️🍨🎃🔑💋🐨🍃🔗🔒📢🔍📫🍁📣📝🎤🔬💰🐒🌙🐁🎥💪🍄🎹🎵👔📰🔕⛔️🚫👃🔩🐙👌👐🐂🐼⛅️🐾🍑🍐🐧🎭☎️🐖🐽💊🍍🍕👇👈👉👆🚓🐩💩📯🍗🙏👛📌🐇🐎📻🐀🎀🍚💍🚀🐓🌹🚨📍🏃🎅📡🎷✂️🐚👕🚿💀😄🐌🐍❄️⛄️😭⚽️🔉👾💬⭐️🍓😎💦🏊💉🔭🎾💭🚽👅🎩🚥🏆🎺🐢🚦📼🎮🎻⌚️🐋🍷🐺🔧⚡️💤";

        let input = [0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f,0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1a,0x1b,0x1c,0x1d,0x1e,0x1f,0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,0x29,0x2a,0x2b,0x2c,0x2d,0x2e,0x2f,0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x3a,0x3b,0x3c,0x3d,0x3e,0x3f,0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4a,0x4b,0x4c,0x4d,0x4e,0x4f,0x50,0x51,0x52,0x53,0x54,0x55,0x56,0x57,0x58,0x59,0x5a,0x5b,0x5c,0x5d,0x5e,0x5f,0x60,0x61,0x62,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6a,0x6b,0x6c,0x6d,0x6e,0x6f,0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7a,0x7b,0x7c,0x7d,0x7e,0x7f,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9a,0x9b,0x9c,0x9d,0x9e,0x9f,0xa0,0xa1,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,0xa8,0xa9,0xaa,0xab,0xac,0xad,0xae,0xaf,0xb0,0xb1,0xb2,0xb3,0xb4,0xb5,0xb6,0xb7,0xb8,0xb9,0xba,0xbb,0xbc,0xbd,0xbe,0xbf,0xc0,0xc1,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xcb,0xcc,0xcd,0xce,0xcf,0xd0,0xd1,0xd2,0xd3,0xd4,0xd5,0xd6,0xd7,0xd8,0xd9,0xda,0xdb,0xdc,0xdd,0xde,0xdf,0xe0,0xe1,0xe2,0xe3,0xe4,0xe5,0xe6,0xe7,0xe8,0xe9,0xea,0xeb,0xec,0xed,0xee,0xef,0xf0,0xf1,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7,0xf8,0xf9,0xfa,0xfb,0xfc,0xfd,0xfe,0xff];
        assert_eq!(to_string(&input[..]), res);
    }

    #[test]
    fn from_string() {
        let input = "Convert everything to Emojis.";
        let output = "🐫🔦🔥🎲🐬🍀🍟🔋🐬🎲🐬🍀🎁🍟💧👂🔥🚪🔋🍟🔦🔋🚗👣🔦🌍👂🍤🐗";

        assert_eq!(to_string(input), output);
    }
}