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#[derive(Clone, Default)]
pub struct Client(reqwest::Client);

impl Client {
    /// # Errors
    ///
    /// Returns errors on network or deserialization failures.
    pub async fn query(&self, s: &str) -> Result<Query, &'static str> {
        let url = crate::resolve(s)?;

        let client = &self.0;
        let response = client.get(url).send().await.map_err(|_| "request failed")?;
        let text = response.text().await.map_err(|_| "body failed")?;

        text.parse::<crate::Query>()
            .map_err(|_| "parse failed")
            .map(|query| match query {
                crate::Query::Channel(core) => Query::Channel(Channel { client, core }),
                crate::Query::Pay(core) => Query::Pay(Pay { client, core }),
                crate::Query::Withdraw(core) => Query::Withdraw(Withdraw { client, core }),
            })
    }
}

#[derive(Clone, Debug)]
pub enum Query<'a> {
    Channel(Channel<'a>),
    Pay(Pay<'a>),
    Withdraw(Withdraw<'a>),
}

#[derive(Clone, Debug)]
pub struct Channel<'a> {
    client: &'a reqwest::Client,
    pub core: crate::channel::Query,
}

#[derive(Clone, Debug)]
pub struct Pay<'a> {
    client: &'a reqwest::Client,
    pub core: crate::pay::Query,
}

#[derive(Clone, Debug)]
pub struct Withdraw<'a> {
    client: &'a reqwest::Client,
    pub core: crate::withdraw::Query,
}

impl Channel<'_> {
    /// # Errors
    ///
    /// Returns errors on network or deserialization failures.
    pub async fn callback_accept(
        self,
        remoteid: String,
        private: bool,
    ) -> Result<crate::channel::CallbackResponse, &'static str> {
        let callback = self.core.callback_accept(remoteid, private).url();

        let response = self
            .client
            .get(callback)
            .send()
            .await
            .map_err(|_| "request failed")?;

        let text = response.text().await.map_err(|_| "body failed")?;
        text.parse().map_err(|_| "parse failed")
    }

    /// # Errors
    ///
    /// Returns errors on network or deserialization failures.
    pub async fn callback_cancel(
        self,
        remoteid: String,
    ) -> Result<crate::channel::CallbackResponse, &'static str> {
        let callback = self.core.callback_cancel(remoteid).url();

        let response = self
            .client
            .get(callback)
            .send()
            .await
            .map_err(|_| "request failed")?;

        let text = response.text().await.map_err(|_| "body failed")?;
        text.parse().map_err(|_| "parse failed")
    }
}

impl Pay<'_> {
    /// # Errors
    ///
    /// Returns errors on network or deserialization failures.
    pub async fn callback(
        self,
        millisatoshis: u64,
        comment: String,
    ) -> Result<crate::pay::CallbackResponse, &'static str> {
        let callback = self.core.callback(millisatoshis, comment).url();

        let response = self
            .client
            .get(callback)
            .send()
            .await
            .map_err(|_| "request failed")?;

        let text = response.text().await.map_err(|_| "body failed")?;
        text.parse().map_err(|_| "parse failed")
    }
}

impl Withdraw<'_> {
    /// # Errors
    ///
    /// Returns errors on network or deserialization failures.
    pub async fn callback(
        self,
        pr: String,
    ) -> Result<crate::withdraw::CallbackResponse, &'static str> {
        let callback = self.core.callback(pr).url();

        let response = self
            .client
            .get(callback)
            .send()
            .await
            .map_err(|_| "request failed")?;

        let text = response.text().await.map_err(|_| "body failed")?;
        text.parse().map_err(|_| "parse failed")
    }
}