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use crate::types::{Bytes, Index, Log, H160, H2048, H256, U256, U64};
use serde::{Deserialize, Serialize};

/// Description of a Transaction, pending or in the chain.
#[derive(Debug, Default, Clone, PartialEq, Deserialize, Serialize)]
pub struct Transaction {
    /// Hash
    pub hash: H256,
    /// Nonce
    pub nonce: U256,
    /// Block hash. None when pending.
    #[serde(rename = "blockHash")]
    pub block_hash: Option<H256>,
    /// Block number. None when pending.
    #[serde(rename = "blockNumber")]
    pub block_number: Option<U64>,
    /// Transaction Index. None when pending.
    #[serde(rename = "transactionIndex")]
    pub transaction_index: Option<Index>,
    /// Sender
    pub from: H160,
    /// Recipient (None when contract creation)
    pub to: Option<H160>,
    /// Transfered value
    pub value: U256,
    /// Gas Price
    #[serde(rename = "gasPrice")]
    pub gas_price: U256,
    /// Gas amount
    pub gas: U256,
    /// Input data
    pub input: Bytes,
    /// Raw transaction data
    #[serde(default)]
    pub raw: Option<Bytes>,
}

/// "Receipt" of an executed transaction: details of its execution.
#[derive(Debug, Default, Clone, PartialEq, Serialize, Deserialize)]
pub struct Receipt {
    /// Transaction hash.
    #[serde(rename = "transactionHash")]
    pub transaction_hash: H256,
    /// Index within the block.
    #[serde(rename = "transactionIndex")]
    pub transaction_index: Index,
    /// Hash of the block this transaction was included within.
    #[serde(rename = "blockHash")]
    pub block_hash: Option<H256>,
    /// Number of the block this transaction was included within.
    #[serde(rename = "blockNumber")]
    pub block_number: Option<U64>,
    /// Cumulative gas used within the block after this was executed.
    #[serde(rename = "cumulativeGasUsed")]
    pub cumulative_gas_used: U256,
    /// Gas used by this transaction alone.
    ///
    /// Gas used is `None` if the the client is running in light client mode.
    #[serde(rename = "gasUsed")]
    pub gas_used: Option<U256>,
    /// Contract address created, or `None` if not a deployment.
    #[serde(rename = "contractAddress")]
    pub contract_address: Option<H160>,
    /// Logs generated within this transaction.
    pub logs: Vec<Log>,
    /// Status: either 1 (success) or 0 (failure).
    pub status: Option<U64>,
    /// State root.
    pub root: Option<H256>,
    /// Logs bloom
    #[serde(rename = "logsBloom")]
    pub logs_bloom: H2048,
}

/// Raw bytes of a signed, but not yet sent transaction
#[derive(Debug, Default, Clone, PartialEq, Serialize, Deserialize)]
pub struct RawTransaction {
    /// Signed transaction as raw bytes
    pub raw: Bytes,
    /// Transaction details
    pub tx: RawTransactionDetails,
}

/// Details of a signed transaction
#[derive(Debug, Default, Clone, PartialEq, Serialize, Deserialize)]
pub struct RawTransactionDetails {
    /// Hash
    pub hash: H256,
    /// Nonce
    pub nonce: U256,
    /// Block hash. None when pending.
    #[serde(rename = "blockHash")]
    pub block_hash: Option<H256>,
    /// Block number. None when pending.
    #[serde(rename = "blockNumber")]
    pub block_number: Option<U64>,
    /// Transaction Index. None when pending.
    #[serde(rename = "transactionIndex")]
    pub transaction_index: Option<Index>,
    /// Sender
    pub from: Option<H160>,
    /// Recipient (None when contract creation)
    pub to: Option<H160>,
    /// Transfered value
    pub value: U256,
    /// Gas Price
    #[serde(rename = "gasPrice")]
    pub gas_price: U256,
    /// Gas amount
    pub gas: U256,
    /// Input data
    pub input: Bytes,
    /// ECDSA recovery id, set by Geth
    pub v: Option<U64>,
    /// ECDSA signature r, 32 bytes, set by Geth
    pub r: Option<U256>,
    /// ECDSA signature s, 32 bytes, set by Geth
    pub s: Option<U256>,
}

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

    #[test]
    fn test_deserialize_receipt() {
        let receipt_str = "{\"blockHash\":\"0x83eaba432089a0bfe99e9fc9022d1cfcb78f95f407821be81737c84ae0b439c5\",\"blockNumber\":\"0x38\",\"contractAddress\":\"0x03d8c4566478a6e1bf75650248accce16a98509f\",\"cumulativeGasUsed\":\"0x927c0\",\"gasUsed\":\"0x927c0\",\"logs\":[],\"logsBloom\":\"0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000\",\"root\":null,\"transactionHash\":\"0x422fb0d5953c0c48cbb42fb58e1c30f5e150441c68374d70ca7d4f191fd56f26\",\"transactionIndex\":\"0x0\"}";

        let _receipt: Receipt = serde_json::from_str(receipt_str).unwrap();
    }

    #[test]
    fn should_deserialize_receipt_with_status() {
        let receipt_str = r#"{
        "blockHash": "0x83eaba432089a0bfe99e9fc9022d1cfcb78f95f407821be81737c84ae0b439c5",
        "blockNumber": "0x38",
        "contractAddress": "0x03d8c4566478a6e1bf75650248accce16a98509f",
        "cumulativeGasUsed": "0x927c0",
        "gasUsed": "0x927c0",
        "logs": [],
        "logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
        "root": null,
        "transactionHash": "0x422fb0d5953c0c48cbb42fb58e1c30f5e150441c68374d70ca7d4f191fd56f26",
        "transactionIndex": "0x0",
        "status": "0x1"
    }"#;

        let _receipt: Receipt = serde_json::from_str(receipt_str).unwrap();
    }

    #[test]
    fn should_deserialize_receipt_without_gas() {
        let receipt_str = r#"{
        "blockHash": "0x83eaba432089a0bfe99e9fc9022d1cfcb78f95f407821be81737c84ae0b439c5",
        "blockNumber": "0x38",
        "contractAddress": "0x03d8c4566478a6e1bf75650248accce16a98509f",
        "cumulativeGasUsed": "0x927c0",
        "gasUsed": null,
        "logs": [],
        "logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
        "root": null,
        "transactionHash": "0x422fb0d5953c0c48cbb42fb58e1c30f5e150441c68374d70ca7d4f191fd56f26",
        "transactionIndex": "0x0",
        "status": "0x1"
    }"#;

        let _receipt: Receipt = serde_json::from_str(receipt_str).unwrap();
    }

    #[test]
    fn test_deserialize_signed_tx_parity() {
        // taken from RPC docs.
        let tx_str = r#"{
        "raw": "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675",
        "tx": {
          "hash": "0xc6ef2fc5426d6ad6fd9e2a26abeab0aa2411b7ab17f30a99d3cb96aed1d1055b",
          "nonce": "0x0",
          "blockHash": "0xbeab0aa2411b7ab17f30a99d3cb9c6ef2fc5426d6ad6fd9e2a26a6aed1d1055b",
          "blockNumber": "0x15df",
          "transactionIndex": "0x1",
          "from": "0x407d73d8a49eeb85d32cf465507dd71d507100c1",
          "to": "0x853f43d8a49eeb85d32cf465507dd71d507100c1",
          "value": "0x7f110",
          "gas": "0x7f110",
          "gasPrice": "0x09184e72a000",
          "input": "0x603880600c6000396000f300603880600c6000396000f3603880600c6000396000f360",
          "s": "0x777"
        }
    }"#;

        let _tx: RawTransaction = serde_json::from_str(tx_str).unwrap();
    }

    #[test]
    fn test_deserialize_signed_tx_geth() {
        let tx_str = r#"{
        "raw": "0xf85d01018094f3b3138e5eb1c75b43994d1bb760e2f9f735789680801ca06484d00575e961a7db35ebe5badaaca5cb7ee65d1f2f22f22da87c238b99d30da07a85d65797e4b555c1d3f64beebb2cb6f16a6fbd40c43cc48451eaf85305f66e",
        "tx": {
          "gas": "0x0",
          "gasPrice": "0x1",
          "hash": "0x0a32fb4e18bc6f7266a164579237b1b5c74271d453c04eab70444ca367d38418",
          "input": "0x",
          "nonce": "0x1",
          "to": "0xf3b3138e5eb1c75b43994d1bb760e2f9f7357896",
          "r": "0x6484d00575e961a7db35ebe5badaaca5cb7ee65d1f2f22f22da87c238b99d30d",
          "s": "0x7a85d65797e4b555c1d3f64beebb2cb6f16a6fbd40c43cc48451eaf85305f66e",
          "v": "0x1c",
          "value": "0x0"
        }
    }"#;

        let _tx: RawTransaction = serde_json::from_str(tx_str).unwrap();
    }
}