matc 0.1.2

//! Matter TLV encoders and decoders for Commodity Price Cluster
//! Cluster ID: 0x0095
//!
//! This file is automatically generated from CommodityPrice.xml

use crate::tlv;
use anyhow;
use serde_json;


// Bitmap definitions

/// CommodityPriceDetail bitmap type
pub type CommodityPriceDetail = u8;

/// Constants for CommodityPriceDetail
pub mod commoditypricedetail {
    /// A textual description of a price; e.g. the name of a rate plan.
    pub const DESCRIPTION: u8 = 0x01;
    /// A breakdown of the component parts of a price; e.g. generation, delivery, etc.
    pub const COMPONENTS: u8 = 0x02;
}

// Struct definitions

#[derive(Debug, serde::Serialize)]
pub struct CommodityPriceComponent {
    pub price: Option<u8>,
    pub source: Option<u8>,
    pub description: Option<String>,
    pub tariff_component_id: Option<u32>,
}

#[derive(Debug, serde::Serialize)]
pub struct CommodityPrice {
    pub period_start: Option<u64>,
    pub period_end: Option<u64>,
    pub price: Option<u8>,
    pub price_level: Option<i16>,
    pub description: Option<String>,
    pub components: Option<Vec<CommodityPriceComponent>>,
}

// Command encoders

/// Encode GetDetailedPriceRequest command (0x00)
pub fn encode_get_detailed_price_request(details: CommodityPriceDetail) -> anyhow::Result<Vec<u8>> {
    let tlv = tlv::TlvItemEnc {
        tag: 0,
        value: tlv::TlvItemValueEnc::StructInvisible(vec![
        (0, tlv::TlvItemValueEnc::UInt8(details)).into(),
        ]),
    };
    Ok(tlv.encode()?)
}

/// Encode GetDetailedForecastRequest command (0x02)
pub fn encode_get_detailed_forecast_request(details: CommodityPriceDetail) -> anyhow::Result<Vec<u8>> {
    let tlv = tlv::TlvItemEnc {
        tag: 0,
        value: tlv::TlvItemValueEnc::StructInvisible(vec![
        (0, tlv::TlvItemValueEnc::UInt8(details)).into(),
        ]),
    };
    Ok(tlv.encode()?)
}

// Attribute decoders

/// Decode TariffUnit attribute (0x0000)
pub fn decode_tariff_unit(inp: &tlv::TlvItemValue) -> anyhow::Result<u8> {
    if let tlv::TlvItemValue::Int(v) = inp {
        Ok(*v as u8)
    } else {
        Err(anyhow::anyhow!("Expected UInt8"))
    }
}

/// Decode Currency attribute (0x0001)
pub fn decode_currency(inp: &tlv::TlvItemValue) -> anyhow::Result<Option<u8>> {
    if let tlv::TlvItemValue::Int(v) = inp {
        Ok(Some(*v as u8))
    } else {
        Ok(None)
    }
}

/// Decode CurrentPrice attribute (0x0002)
pub fn decode_current_price(inp: &tlv::TlvItemValue) -> anyhow::Result<Option<CommodityPrice>> {
    if let tlv::TlvItemValue::List(_fields) = inp {
        // Struct with fields
        let item = tlv::TlvItem { tag: 0, value: inp.clone() };
        Ok(Some(CommodityPrice {
                period_start: item.get_int(&[0]),
                period_end: item.get_int(&[1]),
                price: item.get_int(&[2]).map(|v| v as u8),
                price_level: item.get_int(&[3]).map(|v| v as i16),
                description: item.get_string_owned(&[4]),
                components: {
                    if let Some(tlv::TlvItemValue::List(l)) = item.get(&[5]) {
                        let mut items = Vec::new();
                        for list_item in l {
                            items.push(CommodityPriceComponent {
                price: list_item.get_int(&[0]).map(|v| v as u8),
                source: list_item.get_int(&[1]).map(|v| v as u8),
                description: list_item.get_string_owned(&[2]),
                tariff_component_id: list_item.get_int(&[3]).map(|v| v as u32),
                            });
                        }
                        Some(items)
                    } else {
                        None
                    }
                },
        }))
    //} else if let tlv::TlvItemValue::Null = inp {
    //    // Null value for nullable struct
    //    Ok(None)
    } else {
    Ok(None)
    //    Err(anyhow::anyhow!("Expected struct fields or null"))
    }
}

/// Decode PriceForecast attribute (0x0003)
pub fn decode_price_forecast(inp: &tlv::TlvItemValue) -> anyhow::Result<Vec<CommodityPrice>> {
    let mut res = Vec::new();
    if let tlv::TlvItemValue::List(v) = inp {
        for item in v {
            res.push(CommodityPrice {
                period_start: item.get_int(&[0]),
                period_end: item.get_int(&[1]),
                price: item.get_int(&[2]).map(|v| v as u8),
                price_level: item.get_int(&[3]).map(|v| v as i16),
                description: item.get_string_owned(&[4]),
                components: {
                    if let Some(tlv::TlvItemValue::List(l)) = item.get(&[5]) {
                        let mut items = Vec::new();
                        for list_item in l {
                            items.push(CommodityPriceComponent {
                price: list_item.get_int(&[0]).map(|v| v as u8),
                source: list_item.get_int(&[1]).map(|v| v as u8),
                description: list_item.get_string_owned(&[2]),
                tariff_component_id: list_item.get_int(&[3]).map(|v| v as u32),
                            });
                        }
                        Some(items)
                    } else {
                        None
                    }
                },
            });
        }
    }
    Ok(res)
}


// JSON dispatcher function

/// Decode attribute value and return as JSON string
///
/// # Parameters
/// * `cluster_id` - The cluster identifier
/// * `attribute_id` - The attribute identifier
/// * `tlv_value` - The TLV value to decode
///
/// # Returns
/// JSON string representation of the decoded value or error
pub fn decode_attribute_json(cluster_id: u32, attribute_id: u32, tlv_value: &crate::tlv::TlvItemValue) -> String {
    // Verify this is the correct cluster
    if cluster_id != 0x0095 {
        return format!("{{\"error\": \"Invalid cluster ID. Expected 0x0095, got {}\"}}", cluster_id);
    }

    match attribute_id {
        0x0000 => {
            match decode_tariff_unit(tlv_value) {
                Ok(value) => serde_json::to_string(&value).unwrap_or_else(|_| "null".to_string()),
                Err(e) => format!("{{\"error\": \"{}\"}}", e),
            }
        }
        0x0001 => {
            match decode_currency(tlv_value) {
                Ok(value) => serde_json::to_string(&value).unwrap_or_else(|_| "null".to_string()),
                Err(e) => format!("{{\"error\": \"{}\"}}", e),
            }
        }
        0x0002 => {
            match decode_current_price(tlv_value) {
                Ok(value) => serde_json::to_string(&value).unwrap_or_else(|_| "null".to_string()),
                Err(e) => format!("{{\"error\": \"{}\"}}", e),
            }
        }
        0x0003 => {
            match decode_price_forecast(tlv_value) {
                Ok(value) => serde_json::to_string(&value).unwrap_or_else(|_| "null".to_string()),
                Err(e) => format!("{{\"error\": \"{}\"}}", e),
            }
        }
        _ => format!("{{\"error\": \"Unknown attribute ID: {}\"}}", attribute_id),
    }
}

/// Get list of all attributes supported by this cluster
///
/// # Returns
/// Vector of tuples containing (attribute_id, attribute_name)
pub fn get_attribute_list() -> Vec<(u32, &'static str)> {
    vec![
        (0x0000, "TariffUnit"),
        (0x0001, "Currency"),
        (0x0002, "CurrentPrice"),
        (0x0003, "PriceForecast"),
    ]
}

#[derive(Debug, serde::Serialize)]
pub struct GetDetailedPriceResponse {
    pub current_price: Option<CommodityPrice>,
}

#[derive(Debug, serde::Serialize)]
pub struct GetDetailedForecastResponse {
    pub price_forecast: Option<Vec<CommodityPrice>>,
}

// Command response decoders

/// Decode GetDetailedPriceResponse command response (01)
pub fn decode_get_detailed_price_response(inp: &tlv::TlvItemValue) -> anyhow::Result<GetDetailedPriceResponse> {
    if let tlv::TlvItemValue::List(_fields) = inp {
        let item = tlv::TlvItem { tag: 0, value: inp.clone() };
        Ok(GetDetailedPriceResponse {
                current_price: {
                    if let Some(nested_tlv) = item.get(&[0]) {
                        if let tlv::TlvItemValue::List(_) = nested_tlv {
                            let nested_item = tlv::TlvItem { tag: 0, value: nested_tlv.clone() };
                            Some(CommodityPrice {
                period_start: nested_item.get_int(&[0]),
                period_end: nested_item.get_int(&[1]),
                price: nested_item.get_int(&[2]).map(|v| v as u8),
                price_level: nested_item.get_int(&[3]).map(|v| v as i16),
                description: nested_item.get_string_owned(&[4]),
                components: {
                    if let Some(tlv::TlvItemValue::List(l)) = nested_item.get(&[5]) {
                        let mut items = Vec::new();
                        for list_item in l {
                            items.push(CommodityPriceComponent {
                price: list_item.get_int(&[0]).map(|v| v as u8),
                source: list_item.get_int(&[1]).map(|v| v as u8),
                description: list_item.get_string_owned(&[2]),
                tariff_component_id: list_item.get_int(&[3]).map(|v| v as u32),
                            });
                        }
                        Some(items)
                    } else {
                        None
                    }
                },
                            })
                        } else {
                            None
                        }
                    } else {
                        None
                    }
                },
        })
    } else {
        Err(anyhow::anyhow!("Expected struct fields"))
    }
}

/// Decode GetDetailedForecastResponse command response (03)
pub fn decode_get_detailed_forecast_response(inp: &tlv::TlvItemValue) -> anyhow::Result<GetDetailedForecastResponse> {
    if let tlv::TlvItemValue::List(_fields) = inp {
        let item = tlv::TlvItem { tag: 0, value: inp.clone() };
        Ok(GetDetailedForecastResponse {
                price_forecast: {
                    if let Some(tlv::TlvItemValue::List(l)) = item.get(&[0]) {
                        let mut items = Vec::new();
                        for list_item in l {
                            items.push(CommodityPrice {
                period_start: list_item.get_int(&[0]),
                period_end: list_item.get_int(&[1]),
                price: list_item.get_int(&[2]).map(|v| v as u8),
                price_level: list_item.get_int(&[3]).map(|v| v as i16),
                description: list_item.get_string_owned(&[4]),
                components: {
                    if let Some(tlv::TlvItemValue::List(l)) = list_item.get(&[5]) {
                        let mut items = Vec::new();
                        for list_item in l {
                            items.push(CommodityPriceComponent {
                price: list_item.get_int(&[0]).map(|v| v as u8),
                source: list_item.get_int(&[1]).map(|v| v as u8),
                description: list_item.get_string_owned(&[2]),
                tariff_component_id: list_item.get_int(&[3]).map(|v| v as u32),
                            });
                        }
                        Some(items)
                    } else {
                        None
                    }
                },
                            });
                        }
                        Some(items)
                    } else {
                        None
                    }
                },
        })
    } else {
        Err(anyhow::anyhow!("Expected struct fields"))
    }
}

#[derive(Debug, serde::Serialize)]
pub struct PriceChangeEvent {
    pub current_price: Option<CommodityPrice>,
}

// Event decoders

/// Decode PriceChange event (0x00, priority: info)
pub fn decode_price_change_event(inp: &tlv::TlvItemValue) -> anyhow::Result<PriceChangeEvent> {
    if let tlv::TlvItemValue::List(_fields) = inp {
        let item = tlv::TlvItem { tag: 0, value: inp.clone() };
        Ok(PriceChangeEvent {
                                current_price: {
                    if let Some(nested_tlv) = item.get(&[0]) {
                        if let tlv::TlvItemValue::List(_) = nested_tlv {
                            let nested_item = tlv::TlvItem { tag: 0, value: nested_tlv.clone() };
                            Some(CommodityPrice {
                period_start: nested_item.get_int(&[0]),
                period_end: nested_item.get_int(&[1]),
                price: nested_item.get_int(&[2]).map(|v| v as u8),
                price_level: nested_item.get_int(&[3]).map(|v| v as i16),
                description: nested_item.get_string_owned(&[4]),
                components: {
                    if let Some(tlv::TlvItemValue::List(l)) = nested_item.get(&[5]) {
                        let mut items = Vec::new();
                        for list_item in l {
                            items.push(CommodityPriceComponent {
                price: list_item.get_int(&[0]).map(|v| v as u8),
                source: list_item.get_int(&[1]).map(|v| v as u8),
                description: list_item.get_string_owned(&[2]),
                tariff_component_id: list_item.get_int(&[3]).map(|v| v as u32),
                            });
                        }
                        Some(items)
                    } else {
                        None
                    }
                },
                            })
                        } else {
                            None
                        }
                    } else {
                        None
                    }
                },
        })
    } else {
        Err(anyhow::anyhow!("Expected struct fields"))
    }
}