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use crate::{
    export::Principal,
    hash_tree::{HashTree, Label},
};
use serde::{Deserialize, Serialize};

#[derive(Debug, Clone, Deserialize, Serialize)]
#[serde(rename_all = "snake_case")]
pub struct Envelope<T: Serialize> {
    pub content: T,
    #[serde(default)]
    #[serde(skip_serializing_if = "Option::is_none")]
    #[serde(with = "serde_bytes")]
    pub sender_pubkey: Option<Vec<u8>>,
    #[serde(default)]
    #[serde(skip_serializing_if = "Option::is_none")]
    #[serde(with = "serde_bytes")]
    pub sender_sig: Option<Vec<u8>>,
}

#[derive(Debug, Clone, Deserialize, Serialize)]
#[serde(tag = "request_type")]
pub enum AsyncContent {
    #[serde(rename = "call")]
    CallRequest {
        #[serde(default)]
        #[serde(skip_serializing_if = "Option::is_none")]
        #[serde(with = "serde_bytes")]
        nonce: Option<Vec<u8>>,
        ingress_expiry: u64,
        sender: Principal,
        canister_id: Principal,
        method_name: String,
        #[serde(with = "serde_bytes")]
        arg: Vec<u8>,
    },
}

// A request as submitted to /api/v2/.../call
#[derive(Debug, Clone, Deserialize, Serialize)]
#[serde(tag = "request_type")]
pub enum CallRequestContent {
    #[serde(rename = "call")]
    CallRequest {
        #[serde(default)]
        #[serde(skip_serializing_if = "Option::is_none")]
        #[serde(with = "serde_bytes")]
        nonce: Option<Vec<u8>>,
        ingress_expiry: u64,
        sender: Principal,
        canister_id: Principal,
        method_name: String,
        #[serde(with = "serde_bytes")]
        arg: Vec<u8>,
    },
}

// A request as submitted to /api/v2/.../read_state
#[derive(Debug, Clone, Deserialize, Serialize)]
#[serde(tag = "request_type")]
pub enum ReadStateContent {
    #[serde(rename = "read_state")]
    ReadStateRequest {
        ingress_expiry: u64,
        sender: Principal,
        paths: Vec<Vec<Label>>,
    },
}

// A request as submitted to /api/v2/.../query
#[derive(Debug, Clone, Deserialize, Serialize)]
#[serde(tag = "request_type")]
pub enum QueryContent {
    #[serde(rename = "query")]
    QueryRequest {
        ingress_expiry: u64,
        sender: Principal,
        canister_id: Principal,
        method_name: String,
        #[serde(with = "serde_bytes")]
        arg: Vec<u8>,
    },
}

#[derive(Debug, Clone, Deserialize, Serialize)]
#[serde(tag = "request_type")]
pub enum SyncContent {
    #[serde(rename = "read_state")]
    ReadStateRequest {
        ingress_expiry: u64,
        sender: Principal,
        paths: Vec<Vec<Label>>,
    },
    #[serde(rename = "query")]
    QueryRequest {
        ingress_expiry: u64,
        sender: Principal,
        canister_id: Principal,
        method_name: String,
        #[serde(with = "serde_bytes")]
        arg: Vec<u8>,
    },
}

#[derive(Debug, Clone, Deserialize, Serialize, PartialEq)]
pub struct ReadStateResponse {
    #[serde(with = "serde_bytes")]
    pub certificate: Vec<u8>,
}

/// A `Certificate` as defined in https://smartcontracts.org/docs/interface-spec/index.html#_certificate
#[derive(Debug, Deserialize, PartialEq, Eq)]
pub struct Certificate<'a> {
    /// The hash tree.
    pub tree: HashTree<'a>,

    /// The signature of the root hash in `tree`.
    #[serde(with = "serde_bytes")]
    pub signature: Vec<u8>,

    /// A delegation from the root key to the key used to sign `signature`, if one exists.
    pub delegation: Option<Delegation>,
}

#[derive(Debug, Deserialize, PartialEq, Eq)]
pub struct Delegation {
    #[serde(with = "serde_bytes")]
    pub subnet_id: Vec<u8>,

    #[serde(with = "serde_bytes")]
    pub certificate: Vec<u8>,
}

#[derive(Debug, Clone, Deserialize, Serialize)]
#[serde(tag = "status")]
pub enum Status {
    #[serde(rename = "unknown")]
    Unknown {},
    #[serde(rename = "received")]
    Received {},
    #[serde(rename = "processing")]
    Processing {},
    #[serde(rename = "replied")]
    Replied { reply: RequestStatusResponseReplied },
    #[serde(rename = "rejected")]
    Rejected {
        reject_code: u64,
        reject_message: String,
    },
    #[serde(rename = "done")]
    Done {},
}

#[derive(Debug, Clone, Deserialize, Serialize)]
#[serde(untagged)]
pub enum RequestStatusResponseReplied {
    CallReply(CallReply),
}

#[derive(Debug, Clone, Deserialize, Serialize)]
pub struct CallReply {
    #[serde(with = "serde_bytes")]
    pub arg: Vec<u8>,
}

#[derive(Debug, Clone, Deserialize, Serialize)]
#[serde(tag = "status")]
pub enum QueryResponse {
    #[serde(rename = "replied")]
    Replied { reply: CallReply },
    #[serde(rename = "rejected")]
    Rejected {
        reject_code: u64,
        reject_message: String,
    },
}