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use crate::geocoding::reverse::ReverseRequest;
use percent_encoding::{utf8_percent_encode, NON_ALPHANUMERIC};
impl<'a> ReverseRequest<'a> {
/// Builds the query string for the Google Maps Geocoding API based on the
/// input provided by the client.
///
/// ## Arguments
///
/// This method accepts no arguments.
pub fn build(&mut self) -> &'a mut ReverseRequest {
// This section builds the "required parameters" portion of the query
// string:
let mut query = format!(
"key={}&latlng={}",
self.client.key,
String::from(&self.latlng),
); // format!
// This section builds the "optional parameters" portion of the query
// string:
// Language key/value pair:
if let Some(language) = &self.language {
query.push_str("&language=");
query.push_str(&String::from(language));
} // if
// Location type(s) key/value pair:
if !self.location_types.is_empty() {
query.push_str("&location_type=");
query.push_str(
&utf8_percent_encode(
&self
.location_types
.iter()
.map(String::from)
.collect::<Vec<String>>()
.join("|"),
NON_ALPHANUMERIC,
)
.to_string(),
); // push_str
} // if
// Result type(s) key/value pair:
if !self.result_types.is_empty() {
query.push_str("&result_type=");
query.push_str(
&utf8_percent_encode(
&self
.result_types
.iter()
.map(String::from)
.collect::<Vec<String>>()
.join("|"),
NON_ALPHANUMERIC,
)
.to_string(),
); // push_str
} // if
// Set query string in ReverseRequest struct.
self.query = Some(query);
// Return modified ReverseRequest struct to caller.
self
} // fn
} // impl