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//! This is the Module to interact in a save way with the Arduino Serial C++ library.

use crate::prelude::Pstring;
use core::ffi::{c_char, c_int, c_long, c_size_t, c_uchar, c_uint, c_ulong};

#[derive(Debug, Copy, Clone, Hash, Eq, PartialEq, Ord, PartialOrd)]
pub enum Base {
    Bin = 2,
    Oct = 8,
    Dec = 10,
    Hex = 16,
}

extern "C" {
    #[link_name = "arduino_serial_begin"]
    fn serial_begin(serial: c_ulong);
    #[link_name = "arduino_serial_println_chars"]
    fn print_chars(cstr: *const c_char);
    #[doc(hidden)]
    #[link_name = "arduino_serial_println_chars_progmem"]
    fn print_chars_progmem(pstring: *const c_char);
    // #[link_name = "arduino_serial_print_char"]
    // fn print_char(c: c_char) -> c_size_t;
    #[doc(hidden)]
    #[link_name = "arduino_serial_print_int"]
    fn print_int(n: c_int, base: c_int) -> c_size_t;
    #[doc(hidden)]
    #[link_name = "arduino_serial_print_long"]
    fn print_long(n: c_long, base: c_int) -> c_size_t;
    #[doc(hidden)]
    #[link_name = "arduino_serial_print_unsigned_char"]
    fn print_unsigned_char(n: c_uchar, base: c_int) -> c_size_t;
    #[doc(hidden)]
    #[link_name = "arduino_serial_print_unsigned_int"]
    fn print_unsigned_int(n: c_uint, base: c_int) -> c_size_t;
    #[doc(hidden)]
    #[link_name = "arduino_serial_print_unsigned_long"]
    fn print_unsigned_long(n: c_ulong, base: c_int) -> c_size_t;
}
///The Arduino Serial Print class is available for writing text to the screen buffer.
///
///In the same manner as the Arduino arduboy.print(), etc., functions.
///
///
///Example
/// ```
/// let value: i16 = 42;
///
/// serial.print(b"Hello World\n\0"[..]); // Prints "Hello World" and then sets the
///                                       // text cursor to the start of the next line
/// serial.print(f!(b"Hello World\n")); // Prints "Hello World" but does not use the 2kb ram
/// serial.print(value); // Prints "42"
/// serial.print("\n\0"); // Sets the text cursor to the start of the next line
/// serial.print("hello world") // Prints normal [&str]
/// ```
pub fn print(x: impl Printable) {
    x.print()
}
/// Set the Baud rate for the serial monitor
pub fn begin(baud_rates: u32) {
    unsafe { serial_begin(baud_rates) }
}
pub trait Printable
where
    Self: Sized,
{
    type Parameters;

    fn print_2(self, params: Self::Parameters);
    fn default_parameters() -> Self::Parameters;

    fn print(self) {
        self.print_2(Self::default_parameters());
    }
}

impl Printable for i16 {
    type Parameters = Base;

    fn print_2(self, params: Self::Parameters) {
        unsafe {
            print_int(self, params as c_int);
        }
    }

    fn default_parameters() -> Self::Parameters {
        Base::Dec
    }
}

impl Printable for u16 {
    type Parameters = Base;

    fn print_2(self, params: Self::Parameters) {
        unsafe {
            print_unsigned_int(self, params as c_int);
        }
    }

    fn default_parameters() -> Self::Parameters {
        Base::Dec
    }
}

impl Printable for i32 {
    type Parameters = Base;

    fn print_2(self, params: Self::Parameters) {
        unsafe {
            print_long(self, params as c_int);
        }
    }

    fn default_parameters() -> Self::Parameters {
        Base::Dec
    }
}

impl Printable for u32 {
    type Parameters = Base;

    fn print_2(self, params: Self::Parameters) {
        unsafe {
            print_unsigned_long(self, params as c_int);
        }
    }

    fn default_parameters() -> Self::Parameters {
        Base::Dec
    }
}

impl Printable for &[u8] {
    type Parameters = ();

    fn print_2(self, _params: Self::Parameters) {
        unsafe {
            print_chars(self as *const [u8] as *const i8);
        }
    }

    fn default_parameters() -> Self::Parameters {}
}

impl Printable for &str {
    type Parameters = ();

    fn print_2(self, _params: Self::Parameters) {
        unsafe {
            print_chars(self.as_bytes() as *const [u8] as *const i8);
        }
    }

    fn default_parameters() -> Self::Parameters {}
}
impl<const N: usize> Printable for crate::heapless::String<N> {
    type Parameters = ();

    fn print_2(self, _params: Self::Parameters) {
        unsafe {
            print_chars(self.as_bytes() as *const [u8] as *const i8);
        }
    }

    fn default_parameters() -> Self::Parameters {}
}

impl Printable for Pstring {
    type Parameters = ();

    fn print_2(self, _params: Self::Parameters) {
        unsafe {
            print_chars_progmem(self.pointer);
        }
    }

    fn default_parameters() -> Self::Parameters {}
}