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use schemars::JsonSchema;
use serde::{Deserialize, Serialize};

use cosmwasm_std::{BlockInfo, Timestamp};

/// Duration is an amount of time, measured in seconds
#[derive(Serialize, Deserialize, Clone, Copy, PartialEq, Eq, JsonSchema, Debug)]
pub struct Duration(u64);

impl Duration {
    pub fn new(secs: u64) -> Duration {
        Duration(secs)
    }

    pub fn after(&self, block: &BlockInfo) -> Expiration {
        self.after_time(block.time)
    }

    pub fn after_time(&self, timestamp: Timestamp) -> Expiration {
        Expiration::at_timestamp(timestamp.plus_seconds(self.0))
    }

    pub fn seconds(&self) -> u64 {
        self.0
    }
}

#[derive(Serialize, Deserialize, Clone, Copy, PartialEq, Eq, JsonSchema, Debug)]
pub struct Expiration(Timestamp);

impl Expiration {
    pub fn now(block: &BlockInfo) -> Self {
        Self(block.time)
    }

    pub fn at_timestamp(timestamp: Timestamp) -> Self {
        Self(timestamp)
    }

    pub fn is_expired(&self, block: &BlockInfo) -> bool {
        self.is_expired_time(block.time)
    }

    pub fn is_expired_time(&self, timestamp: Timestamp) -> bool {
        timestamp >= self.0
    }

    pub fn time(&self) -> Timestamp {
        self.0
    }

    pub fn as_key(&self) -> u64 {
        self.0.nanos()
    }
}
impl From<Expiration> for Timestamp {
    fn from(expiration: Expiration) -> Timestamp {
        expiration.0
    }
}
#[cfg(test)]
mod tests {
    use super::*;

    use cosmwasm_std::{BlockInfo, Timestamp};

    use crate::Duration;

    #[test]
    fn create_expiration_from_duration() {
        let duration = Duration::new(33);
        let block_info = BlockInfo {
            height: 1,
            time: Timestamp::from_seconds(66),
            chain_id: "id".to_owned(),
        };
        assert_eq!(
            duration.after(&block_info),
            Expiration::at_timestamp(Timestamp::from_seconds(99))
        );
    }

    #[test]
    fn expiration_is_expired() {
        let expiration = Expiration::at_timestamp(Timestamp::from_seconds(10));
        let block_info = BlockInfo {
            height: 1,
            time: Timestamp::from_seconds(9),
            chain_id: "id".to_owned(),
        };
        assert!(!expiration.is_expired(&block_info));
        let block_info = BlockInfo {
            height: 1,
            time: Timestamp::from_seconds(10),
            chain_id: "id".to_owned(),
        };
        assert!(expiration.is_expired(&block_info));
        let block_info = BlockInfo {
            height: 1,
            time: Timestamp::from_seconds(11),
            chain_id: "id".to_owned(),
        };
        assert!(expiration.is_expired(&block_info));
    }
}