iproxy 0.3.0

Proxy server for IP geolocation. Use external services to get the geolocation of an IP address.
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use async_trait::async_trait;
use bson::doc;
use bson::oid::ObjectId;
use mongodb::error::Error;
use mongodb::options::{ClientOptions, IndexOptions, ServerApi, ServerApiVersion};
use mongodb::{Client, Collection, Database, IndexModel};
use serde_json::Value;
use std::time::Duration;
use tracing::{error, info};

#[async_trait]
pub trait DbOps {
    async fn insert_ip(&self, data: &Value) -> Result<ObjectId, Error>;
    async fn get_ip(&self, ip: String) -> Result<Option<Value>, Error>;
    // async fn delete_ip(&self, ip: String) -> Result<DeleteResult, Error>;
    // async fn update_ip(&self, ip: String, geolocation: &GeoLocation) -> Result<UpdateResult, Error>;
}

// Required fields for mongodb client and collection setup
#[derive(Clone)]
pub struct Db {
    client: Client,
    database: Database,
    collection: Collection<Value>,
}

// type Result<T> = std::result::Result<T, MyError>;

// Initiate the constructor for Db struct
impl Db {
    pub async fn init(
        connection_url: String,
        database: String,
        collection: String,
    ) -> Result<Self, mongodb::error::Error> {
        let mut client_options = ClientOptions::parse(connection_url).await?;
        client_options.server_selection_timeout = Some(Duration::from_secs(3));
        client_options.app_name = Some(database.to_string());

        // Set the server_api field of the client_options object to Stable API version 1
        let server_api = ServerApi::builder().version(ServerApiVersion::V1).build();
        client_options.server_api = Some(server_api);

        // Create a new client and connect to the server
        let client = Client::with_options(client_options)?;

        let database = client.database(&database);

        // Send a ping to confirm a successful connection
        match database.run_command(doc! { "ping": 1 }).await {
            Ok(_) => info!("successfully connected to database"),
            Err(e) => error!("error connecting to database: {}", e),
        }

        let collection = database.collection(&collection);

        Ok(Db {
            client,
            database,
            collection,
        })
    }

    // Creates an index on the "query" field to force the values to be unique.
    pub async fn create_ips_index(&self) {
        let options = IndexOptions::builder().unique(true).build();

        let model = IndexModel::builder()
            .keys(doc! { "query": 1 })
            .options(options)
            .build();

        self.client
            .database(self.database.name())
            .collection::<Value>(self.collection.name())
            .create_index(model)
            .await
            .expect("creating an index should succeed");
    }
}

#[async_trait]
impl DbOps for Db {
    async fn insert_ip(&self, data: &Value) -> Result<ObjectId, Error> {
        let result = self.collection.insert_one(serde_json::json!(data)).await?;
        Ok(result.inserted_id.as_object_id().unwrap())
    }
    async fn get_ip(&self, ip: String) -> Result<Option<Value>, Error> {
        let filter = doc! { "query": ip };
        let mut ip_data = self.collection.find_one(filter).await?;

        if let Some(ref mut doc) = ip_data {
            doc.as_object_mut().unwrap().remove("_id");
        }

        Ok(ip_data)
    }
    //     // async fn delete_ip(&self, ip: String) -> Result<DeleteResult, Error> {
    //     //     let delete_result = self.collection.delete_one(doc! { "query": &ip }, None).await?;
    //     //     Ok(delete_result)
    //     // }
    //     // async fn update_ip(&self, ip: String, geolocation: &GeoLocation) -> Result<UpdateResult, Error> {
    //     //     let geolocation_bson = to_document(geolocation)?;
    //     //
    //     //     let update_result = self.collection.update_one(doc! {"query": &ip}, geolocation_bson, None).await?;
    //     //     Ok(update_result)
    //     // }
}