use core::{default, fmt::Debug};
use miniconf::{JsonCoreSlash, Tree};
use serde::{Deserialize, Serialize};
use uom::si::{
    electric_current::{ampere, milliampere, ElectricCurrent}, 
    electric_potential::{volt, ElectricPotential}, 
    electrical_resistance::{ElectricalResistance, ohm}, 
    f64::ThermodynamicTemperature, thermodynamic_temperature::degree_celsius
};
use crate::{laser_diode::laser_diode::{
        LdDrive, StatusReport as LdStatusReport
    }, 
    net::net, 
    thermostat::thermostat::StatusReport as TecStatusReport
};
use crate::thermostat::thermostat::Thermostat;
use crate::thermostat::pid_state::PidSettings::*;
use crate::device::dfu;
use log::info;
use crate::DeviceSettings;

#[derive(Deserialize, Serialize, Copy, Clone, Default, Debug)]
enum DeviceCmd {
    #[default]
    Reserved,
    ReportStatus,
    Dfu,
}

#[derive(Deserialize, Serialize, Copy, Clone, Default, Debug)]
enum LdCmdEnum {
    #[default]
    Reserved,
    // LD Drive Related
    PowerUp,
    PowerDown,
    LdTermsShort,
    LdTermsOpen,
    SetI,
    SetISoftLimit,
    // PD Mon Related
    SetPdResponsitivity,
    SetPdDarkCurrent,
    SetPdILimit,
    SetLdPwrLimit,
    ClearAlarmStatus,
    // Report Related
    GetModInTermStatus,
    GetLdStatus,
    GetAlramStatus,
}

#[derive(Deserialize, Serialize, Copy, Clone, Default, Debug)]
enum ThermostatCmdEnum {
    #[default]
    Reserved,
    PowerUp,
    PowerDown,
    // TEC
    SetTecMaxV,
    SetTecMaxIPos,
    SetTecMaxINeg,
    SetTecIOut, // Constant Current Mode
    SetTemperatureSetpoint,
    // PID
    SetPidEngage,
    SetPidDisEngage,
    SetPidKp,
    SetPidKi,
    SetPidKd,
    SetPidOutMin,
    SetPidOutMax,
    SetPidUpdateInterval, // Update Interval is set based on the sampling rate of ADC
    // Steinhart-Hart Equation
    SetShT0,
    SetShR0,
    SetShBeta,
    // Report Related
    GetTecStatus,
    GetPidStatus,
    GetShParams,
}

#[derive(Deserialize, Serialize, Copy, Clone, Debug, Default, Tree)]
pub struct CmdJsonObj{
    laser_diode_cmd: Option<LdCmdEnum>,
    thermostat_cmd: Option<ThermostatCmdEnum>,
    device_cmd: Option<DeviceCmd>,
    data_bool: Option<bool>,
    data_f32: Option<f32>,
    data_f64: Option<f64>,
}
#[derive(Deserialize, Serialize, Copy, Clone, Debug, Default, Tree)]
pub struct Cmd {
    json: CmdJsonObj
}

#[derive(Deserialize, Serialize, Copy, Clone, Debug, Tree)]
pub struct TecStatusReportStruct {
    json: TecStatusReport
}

#[derive(Deserialize, Serialize, Copy, Clone, Debug, Tree)]
pub struct LaserStatusReportStruct {
    json: LdStatusReport
}

pub fn send_ld_readings(buffer: &mut [u8], laser: &mut LdDrive){
    let status_report = LaserStatusReportStruct {
        json: laser.get_status_report()
    };
    let num_bytes = status_report.get_json("/json", buffer).unwrap();
    net::eth_send(buffer, num_bytes);
}

pub fn send_tec_readings(buffer: &mut [u8], tec: &mut Thermostat){
    let status_report = TecStatusReportStruct {
        json: tec.get_status_report()
    };
    let num_bytes = status_report.get_json("/json", buffer).unwrap();
    net::eth_send(buffer, num_bytes);
}

pub fn execute_cmd(buffer: &mut [u8], buffer_size: usize, mut laser: LdDrive, mut tec: Thermostat, mut device_settings: DeviceSettings)->(LdDrive, Thermostat, bool, DeviceSettings){
    let mut should_reset = false;
    
    let mut cmd = Cmd {
        json: CmdJsonObj::default()
    };
    match cmd.set_json("/json", &buffer[0..buffer_size]){
        Ok(_) => {
            info!("############ Laser Diode Command Received {:?}", cmd.json.laser_diode_cmd);
            info!("############ Thermostat Command Received {:?}", cmd.json.thermostat_cmd);
            info!("############ Device Command Received {:?}", cmd.json.device_cmd);

            match cmd.json.device_cmd {
                Some(DeviceCmd::Dfu) => {
                    unsafe {
                        dfu::set_dfu_trigger();
                    }
                    should_reset = true;
                }
                Some(DeviceCmd::ReportStatus) => {
                    match cmd.json.data_bool{
                        Some(val) => {
                            device_settings.report_readings = val;
                        }
                        None => {
                            info!("Wrong Data type is received")
                        }
                    }
                }
                None => { /* Do Nothing */}
                _ => {
                    info!("Unimplemented Command") 
                }
            } 

            match cmd.json.laser_diode_cmd {
                Some(LdCmdEnum::PowerUp) => {
                    laser.power_up()
                }
                Some(LdCmdEnum::PowerDown) => {
                    laser.power_down()
                }
                Some(LdCmdEnum::LdTermsShort) => {
                    laser.ld_short();
                }
                Some(LdCmdEnum::LdTermsOpen) => {
                    laser.ld_open();
                }
                Some(LdCmdEnum::SetI) => {
                    match cmd.json.data_f64 {
                        Some(val) => {
                            laser.ld_set_i(ElectricCurrent::new::<milliampere>(val));
                        }
                        None => {
                            info!("Wrong Data type is received")
                        }
                    }
                }
                Some(LdCmdEnum::SetISoftLimit) => {
                    match cmd.json.data_f64 {
                        Some(val) => {
                            laser.set_ld_drive_current_limit(ElectricCurrent::new::<milliampere>(val))
                        }
                        None => {
                            info!("Wrong Data type is received")
                        }
                    }
                }
                Some(LdCmdEnum::SetPdResponsitivity) => {
                    info!("Not supported Yet")
                }
                Some(LdCmdEnum::SetPdDarkCurrent) => {
                    info!("Not supported Yet")
                }
                Some(LdCmdEnum::SetPdILimit) => {
                    match cmd.json.data_f64 {
                        Some(val) => {
                            laser.set_pd_i_limit(ElectricCurrent::new::<milliampere>(val))
                        }
                        None => {
                            info!("Wrong Data type is received")
                        }
                    }
                }
                Some(LdCmdEnum::SetLdPwrLimit) => {
                    info!("Not supported Yet")
                }
                Some(LdCmdEnum::ClearAlarmStatus) => {
                    laser.pd_mon_clear_alarm()
                }
                Some(LdCmdEnum::GetModInTermStatus) => {
                    info!("Not supported Yet")
                }
                Some(LdCmdEnum::GetLdStatus) => {
                    send_ld_readings(buffer, &mut laser);
                }
                Some(LdCmdEnum::GetAlramStatus) => {
                    info!("Not supported Yet")
                }
                None => { /* Do Nothing*/ }
                _ => {
                    info!("Unimplemented Command")
                }
            }

            match cmd.json.thermostat_cmd {
                Some(ThermostatCmdEnum::PowerUp) => {
                    tec.power_up()
                }
                Some(ThermostatCmdEnum::PowerDown) => {
                    tec.power_down()
                }
                Some(ThermostatCmdEnum::SetTecMaxV) => {
                    match cmd.json.data_f64 {
                        Some(val) => {
                            tec.set_max_v(ElectricPotential::new::<volt>(val));
                        }
                        None => {
                            info!("Wrong Data type is received")
                        }
                    }
                }
                Some(ThermostatCmdEnum::SetTecMaxIPos) => {
                    match cmd.json.data_f64 {
                        Some(val) => {
                            tec.set_max_i_pos(ElectricCurrent::new::<ampere>(val));
                        }
                        None => {
                            info!("Wrong Data type is received")
                        }
                    }
                }
                Some(ThermostatCmdEnum::SetTecMaxINeg) => {
                    match cmd.json.data_f64 {
                        Some(val) => {
                            tec.set_max_i_pos(ElectricCurrent::new::<milliampere>(val));
                        }
                        None => {
                            info!("Wrong Data type is received")
                        }
                    }
                }
                Some(ThermostatCmdEnum::SetTecIOut) => {
                    match cmd.json.data_f64 {
                        Some(val) => {
                            tec.set_i(ElectricCurrent::new::<milliampere>(val));
                        }
                        None => {
                            info!("Wrong Data type is received")
                        }
                    }
                }
                Some(ThermostatCmdEnum::SetTemperatureSetpoint) => {
                    match cmd.json.data_f64 {
                        Some(val) => {
                            tec.set_temperature_setpoint(ThermodynamicTemperature::new::<degree_celsius>(val));
                        }
                        None => {
                            info!("Wrong Data type is received")
                        }
                    }
                }
                Some(ThermostatCmdEnum::SetPidEngage) => {
                    tec.set_pid_engaged(true);
                }
                Some(ThermostatCmdEnum::SetPidDisEngage) => {
                    tec.set_pid_engaged(false);
                }
                Some(ThermostatCmdEnum::SetPidKp) => {
                    match cmd.json.data_f64 {
                        Some(val) => {
                            tec.set_pid(Kp, val);
                        }
                        None => {
                            info!("Wrong Data type is received")
                        }
                    }
                }
                Some(ThermostatCmdEnum::SetPidKi) => {
                    match cmd.json.data_f64 {
                        Some(val) => {
                            tec.set_pid(Ki, val);
                        }
                        None => {
                            info!("Wrong Data type is received")
                        }
                    }
                }
                Some(ThermostatCmdEnum::SetPidKd) => {
                    match cmd.json.data_f64 {
                        Some(val) => {
                            tec.set_pid(Kd, val);
                        }
                        None => {
                            info!("Wrong Data type is received")
                        }
                    }
                }
                Some(ThermostatCmdEnum::SetPidOutMin) => {
                    match cmd.json.data_f64 {
                        Some(val) => {
                            tec.set_pid(Min, val);
                        }
                        None => {
                            info!("Wrong Data type is received")
                        }
                    }
                }
                Some(ThermostatCmdEnum::SetPidOutMax) => {
                    match cmd.json.data_f64 {
                        Some(val) => {
                            tec.set_pid(Max, val);
                        }
                        None => {
                            info!("Wrong Data type is received")
                        }
                    }
                }
                Some(ThermostatCmdEnum::SetPidUpdateInterval) => {
                    info!("Not supported Yet")
                }
                Some(ThermostatCmdEnum::SetShT0) => {
                    match cmd.json.data_f64 {
                        Some(val) => {
                            tec.set_sh_t0(ThermodynamicTemperature::new::<degree_celsius>(val));
                        }
                        None => {
                            info!("Wrong Data type is received")
                        }
                    }
                }
                Some(ThermostatCmdEnum::SetShR0) => {
                    match cmd.json.data_f64 {
                        Some(val) => {
                            tec.set_sh_r0(ElectricalResistance::new::<ohm>(val));
                        }
                        None => {
                            info!("Wrong Data type is received")
                        }
                    }
                }
                Some(ThermostatCmdEnum::SetShBeta) => {
                    match cmd.json.data_f64 {
                        Some(val) => {
                            tec.set_sh_beta(val);
                        }
                        None => {
                            info!("Wrong Data type is received")
                        }
                    }
                }
                Some(ThermostatCmdEnum::GetTecStatus) => {
                    send_tec_readings(buffer, &mut tec);
                }
                Some(ThermostatCmdEnum::GetPidStatus) => {
                    info!("Not supported Yet")
                }
                Some(ThermostatCmdEnum::GetShParams) => {
                    info!("Not supported Yet")
                }
                None => { /* Do Nothing*/ }
                _ => { 
                    info!("Unimplemented Command") 
                }
            }
        }
        Err(err) => {
            info!("Invalid Command: {:?}", err);
        }
    }
    (laser, tec, should_reset, device_settings)
}