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use crate::places::place_search::text_search::request::Request;
use percent_encoding::{utf8_percent_encode, NON_ALPHANUMERIC};

// -----------------------------------------------------------------------------

impl<'a> Request<'a> {
    /// Builds the query string for the Google Maps Places API _Text Search_
    /// query based on the input provided by the client.
    ///
    /// ## Arguments
    ///
    /// This method accepts no arguments.

    pub fn build(&mut self) -> &'a mut Request {
        // This section builds the "required parameters" portion of the query
        // string:

        let mut query = format!(
            "key={}&query={}&radius={}",
            self.client.key,
            utf8_percent_encode(&self.input, NON_ALPHANUMERIC),
            self.radius,
        );
        // 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));
        }

        // Location key/value pair:
        if let Some(location) = &self.location {
            query.push_str("&location=");
            query.push_str(&String::from(location));
        }

        if let Some(maxprice) = &self.maxprice {
            query.push_str("&maxprice=");
            query.push_str(&maxprice.to_string());
        }

        if let Some(minprice) = &self.minprice {
            query.push_str("&minprice=");
            query.push_str(&minprice.to_string());
        }

        if let Some(opennow) = &self.opennow {
            if *opennow {
                query.push_str("&opennow");
            }
        }

        // Page Token key/value pair:
        if let Some(pagetoken) = &self.pagetoken {
            query.push_str("&pagetoken=");
            query.push_str(pagetoken);
        }

        // Region key/value pair:
        if let Some(region) = &self.region {
            query.push_str("&region=");
            query.push_str(&String::from(region));
        }

        // Place Type key/value pair:
        if let Some(place_type) = &self.place_type {
            query.push_str("&type=");
            query.push_str(&String::from(place_type));
        }

        // Set query string in Request struct.
        self.query = Some(query);

        // Return modified Request struct to caller.
        self
    } // fn
} // impl