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use async_trait::async_trait;
use reqwest::header::{HeaderMap, DATE};
use std::collections::HashMap;

use crate::prelude::ListBuckets;

use super::auth::*;
use super::errors::Error;
use super::oss::OSS;

#[derive(Clone, Debug)]
pub struct Bucket {
    name: String,
    creation_date: String,
    location: String,
    extranet_endpoint: String,
    intranet_endpoint: String,
    storage_class: String,
}

impl Bucket {
    pub fn new(
        name: String,
        creation_date: String,
        location: String,
        extranet_endpoint: String,
        intranet_endpoint: String,
        storage_class: String,
    ) -> Self {
        Bucket {
            name,
            creation_date,
            location,
            extranet_endpoint,
            intranet_endpoint,
            storage_class,
        }
    }

    pub fn name(&self) -> &str {
        &self.name
    }

    pub fn creation_date(&self) -> &str {
        &self.creation_date
    }

    pub fn location(&self) -> &str {
        &self.location
    }

    pub fn extranet_endpoint(&self) -> &str {
        &self.extranet_endpoint
    }

    pub fn intranet_endpoint(&self) -> &str {
        &self.intranet_endpoint
    }

    pub fn storage_class(&self) -> &str {
        &self.storage_class
    }
}

#[async_trait]
pub trait ServiceAPI {
    async fn list_bucket<S, R>(&self, resources: R) -> Result<ListBuckets, Error>
    where
        S: AsRef<str> + Send,
        R: Into<Option<HashMap<S, Option<S>>>> + Send;
}

#[async_trait]
impl<'a> ServiceAPI for OSS<'a> {
    async fn list_bucket<S, R>(&self, resources: R) -> Result<ListBuckets, Error>
    where
        S: AsRef<str> + Send,
        R: Into<Option<HashMap<S, Option<S>>>> + Send,
    {
        let resources_str = if let Some(r) = resources.into() {
            self.get_resources_str(&r)
        } else {
            String::new()
        };
        let host = self.endpoint();
        let date = self.date();

        let mut headers = HeaderMap::new();
        headers.insert(DATE, date.parse()?);
        let authorization = self.oss_sign(
            "GET",
            self.key_id(),
            self.key_secret(),
            "",
            "",
            &resources_str,
            &headers,
        );
        headers.insert("Authorization", authorization.parse()?);

        let resp = self.http_client.get(host).headers(headers).send().await?;

        let body = resp.text().await?;
        let list_buckets = quick_xml::de::from_str::<ListBuckets>(&body)?;

        Ok(list_buckets)
    }
}