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use reqwest::header::CONTENT_TYPE;
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use reqwest::Client;
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use std::collections::HashMap;
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use utils::{data_to_dataurl, is_data_url};
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pub fn retrieve_asset(
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cache: &mut HashMap<String, String>,
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client: &Client,
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url: &str,
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as_dataurl: bool,
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mime: &str,
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opt_silent: bool,
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) -> Result<(String, String), reqwest::Error> {
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if is_data_url(&url).unwrap() {
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Ok((url.to_string(), url.to_string()))
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} else {
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if cache.contains_key(&url.to_string()) {
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// url is in cache
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if !opt_silent {
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eprintln!("{} (from cache)", &url);
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}
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let data = cache.get(&url.to_string()).unwrap();
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Ok((data.to_string(), url.to_string()))
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} else {
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// url not in cache, we request it
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let mut response = client.get(url).send()?;
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if !opt_silent {
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if url == response.url().as_str() {
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eprintln!("{}", &url);
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} else {
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eprintln!("{} -> {}", &url, &response.url().as_str());
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}
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}
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if as_dataurl {
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// Convert response into a byte array
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let mut data: Vec<u8> = vec![];
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response.copy_to(&mut data)?;
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// Attempt to obtain MIME type by reading the Content-Type header
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let mimetype = if mime == "" {
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response
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.headers()
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.get(CONTENT_TYPE)
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.and_then(|header| header.to_str().ok())
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.unwrap_or(&mime)
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} else {
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mime
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};
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let dataurl = data_to_dataurl(&mimetype, &data);
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// insert in cache
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cache.insert(response.url().to_string(), dataurl.to_string());
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Ok((dataurl, response.url().to_string()))
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} else {
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let content = response.text().unwrap();
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// insert in cache
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cache.insert(response.url().to_string(), content.clone());
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Ok((content, response.url().to_string()))
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}
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}
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}
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}
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