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use crate::responses::{counts::Counts, errors::Errors, meta::Meta};
use crate::{api::execute_twitter, error::Error, rate_limit::RateLimit};
use chrono::prelude::*;
use reqwest::RequestBuilder;
use serde::{Deserialize, Serialize};

const URL: &str = "https://api.twitter.com/2/tweets/counts/all";

#[derive(Serialize, Deserialize, Debug, Eq, Hash, PartialEq, Clone)]
pub enum Granularity {
    Minute,
    Hour,
    Day,
}

impl std::fmt::Display for Granularity {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        match self {
            Self::Minute => write!(f, "minute"),
            Self::Hour => write!(f, "hour"),
            Self::Day => write!(f, "day"),
        }
    }
}

impl Default for Granularity {
    fn default() -> Self {
        Self::Minute
    }
}

#[derive(Debug, Clone, Default)]
pub struct Api {
    bearer_code: String,
    query: String,
    end_time: Option<DateTime<Utc>>,
    granularity: Option<Granularity>,
    since_id: Option<String>,
    start_time: Option<DateTime<Utc>>,
    until_id: Option<String>,
}

impl Api {
    pub fn new(bearer_code: &str, query: &str) -> Self {
        Self {
            bearer_code: bearer_code.to_owned(),
            query: query.to_owned(),
            ..Default::default()
        }
    }

    pub fn end_time(mut self, value: DateTime<Utc>) -> Self {
        self.end_time = Some(value);
        self
    }

    pub fn granularity(mut self, value: Granularity) -> Self {
        self.granularity = Some(value);
        self
    }

    pub fn since_id(mut self, value: &str) -> Self {
        self.since_id = Some(value.to_owned());
        self
    }

    pub fn start_time(mut self, value: DateTime<Utc>) -> Self {
        self.start_time = Some(value);
        self
    }

    pub fn until_id(mut self, value: &str) -> Self {
        self.until_id = Some(value.to_owned());
        self
    }

    pub fn build(self) -> RequestBuilder {
        let mut query_parameters = vec![];
        query_parameters.push(("query", self.query));
        if let Some(end_time) = self.end_time {
            query_parameters.push(("end_time", end_time.format("%Y-%m-%dT%H%M%SZ").to_string()));
        }
        if let Some(granularity) = self.granularity {
            query_parameters.push(("granularity", granularity.to_string()));
        }
        if let Some(since_id) = self.since_id {
            query_parameters.push(("since_id", since_id));
        }
        if let Some(start_time) = self.start_time {
            query_parameters.push((
                "start_time",
                start_time.format("%Y-%m-%dT%H%M%SZ").to_string(),
            ));
        }
        if let Some(until_id) = self.until_id {
            query_parameters.push(("until_id", until_id));
        }
        let client = reqwest::Client::new();
        client
            .get(URL)
            .query(&query_parameters)
            .bearer_auth(self.bearer_code)
    }

    pub async fn execute(self) -> Result<(Response, Option<RateLimit>), Error> {
        execute_twitter(self.build()).await
    }
}

#[derive(Serialize, Deserialize, Debug, Clone, Default)]
pub struct Response {
    pub data: Option<Vec<Counts>>,
    pub errors: Option<Vec<Errors>>,
    pub meta: Option<Meta>,
    #[serde(flatten)]
    pub extra: std::collections::HashMap<String, serde_json::Value>,
}

impl Response {
    pub fn is_empty_extra(&self) -> bool {
        let res = self.extra.is_empty()
            && self
                .data
                .as_ref()
                .map(|it| it.iter().all(|item| item.is_empty_extra()))
                .unwrap_or(true)
            && self
                .errors
                .as_ref()
                .map(|it| it.iter().all(|item| item.is_empty_extra()))
                .unwrap_or(true)
            && self
                .meta
                .as_ref()
                .map(|it| it.is_empty_extra())
                .unwrap_or(true);
        if !res {
            println!("Response {:?}", self.extra);
        }
        res
    }
}