//! MongODM
//! =======
//!
//! A thin ODM layer for MongoDB built upon the [official Rust driver](https://github.com/mongodb/mongo-rust-driver).
//!
//! Main features:
//!
//! - A stronger API leveraging Rust type system
//! - Data structure models are defined using the well-known [`serde`](https://github.com/serde-rs/serde) serialization framework
//! - Index support on top of the `Database::run_command` (index management is currently not implemented in the underlying driver)
//! - Indexes synchronization
//! - Additional compile-time checks for queries using macros and type associated to mongo operators (eg: `And` instead of "$and")
//!
//! ## Example
//!
//! ```ignore
//! # async fn demo() -> Result<(), mongodb::error::Error> {
//! use mongodm::{ToRepository, Model, CollectionConfig, Indexes, Index, IndexOption, sync_indexes};
//! use mongodm::mongo::{Client, options::ClientOptions, bson::doc};
//! use serde::{Serialize, Deserialize};
//! use std::borrow::Cow;
//! // field! is used to make sure at compile time that some field exists in a given structure
//! use mongodm::field;
//!
//! struct UserCollConf;
//!
//! impl CollectionConfig for UserCollConf {
//!     fn collection_name() -> &'static str {
//!         "user"
//!     }
//!
//!     fn indexes() -> Indexes {
//!         Indexes::new()
//!             .with(Index::new("username").with_option(IndexOption::Unique))
//!             .with(Index::new(field!(last_seen in User))) // field! macro can be used as well
//!     }
//! }
//!
//! #[derive(Serialize, Deserialize, Debug, PartialEq)]
//! struct User {
//!     username: String,
//!     last_seen: i64,
//! }
//!
//! impl Model for User {
//!     type CollConf = UserCollConf;
//! }
//!
//! let client_options = ClientOptions::parse("mongodb://localhost:27017").await?;
//! let client = Client::with_options(client_options)?;
//! let db = client.database("mongodm_wayk_demo");
//!
//! sync_indexes::<UserCollConf>(&db).await?;
//! // indexes are now synced in backend for user collection
//!
//! let repository = db.repository::<User>(); // method provided by `ToRepository` trait
//!
//! let user = User {
//!     username: String::from("David"),
//!     last_seen: 1000,
//! };
//! repository.insert_one(&user, None).await?;
//!
//! // We make sure at compile time that `username` is a field of `User`
//! let fetched_user = repository.find_one(doc! { field!(username in User): "David" }, None).await?;
//! assert!(fetched_user.is_some());
//! assert_eq!(fetched_user.unwrap(), user);
//!
//! // f! is a shorter version of field!
//! use mongodm::f;
//! repository.find_one(doc! { f!(username in User): "David" }, None).await?.unwrap();
//!
//! // With static operators for queries (prevent invalid queries due to typos)
//! use mongodm::operator::*;
//! repository.find_one(
//!     doc! { And: [
//!         { f!(username in User): "David" },
//!         { f!(last_seen in User): { GreaterThan: 500 } },
//!     ] },
//!     None
//! ).await?.unwrap();
//! # Ok(())
//! # }
//! # let mut rt = tokio::runtime::Runtime::new().unwrap();
//! # rt.block_on(demo());
//! ```

#[macro_use]
#[cfg(test)]
extern crate pretty_assertions;

mod macros;

pub mod cursor;
pub mod index;
pub mod operator;
pub mod repository;

pub use cursor::ModelCursor;
pub use index::{sync_indexes, Index, IndexOption, Indexes, SortOrder};
pub use repository::Repository;

// Re-export mongodb
pub use mongodb as mongo;
// Re-export bson
pub use mongodb::bson;
// Re-export bson macros
pub use mongodb::bson::{bson, doc};

/// Associate a collection configuration
pub trait Model: serde::ser::Serialize + serde::de::DeserializeOwned {
    type CollConf: CollectionConfig;
}

/// Define collection name, configuration and associated indexes.
pub trait CollectionConfig {
    /// Collection name to use when creating a `mongodb::Collection` instance.
    fn collection_name() -> &'static str;

    /// `mongodb::options::CollectionOptions` to be used when creating a `mongodb::Collection` instance.
    ///
    /// This method has a default implementation returning `None`.
    /// In such case configuration is defined by the `mongodb::Database` used on `Repository` creation.
    fn collection_options() -> Option<mongodb::options::CollectionOptions> {
        None
    }

    /// Configure how indexes should be created and synchronized for the associated collection.
    ///
    /// This method has a default implementation returning no index (only special `_id` index will be present).
    fn indexes() -> index::Indexes {
        index::Indexes::default()
    }
}

/// Utilities methods to get a `Repository`. Implemented for `mongodb::Database`.
pub trait ToRepository {
    /// Shorthand for `Repository::<Model>::new`.
    fn repository<M: Model>(&self) -> Repository<M>;

    /// Shorthand for `Repository::<Model>::new_with_options`.
    fn repository_with_options<M: Model>(
        &self,
        options: mongodb::options::CollectionOptions,
    ) -> Repository<M>;
}

impl ToRepository for mongodb::Database {
    fn repository<M: Model>(&self) -> Repository<M> {
        Repository::new(self.clone())
    }

    fn repository_with_options<M: Model>(
        &self,
        options: mongodb::options::CollectionOptions,
    ) -> Repository<M> {
        Repository::new_with_options(self.clone(), options)
    }
}

/// Contains everything you need to use MongODM.
///
/// It expose the underlying `mongodb` members prefixed by **Mongo** in an attempt
/// to reduce the risk of conflict, considering the large amount of members
/// exported by the `mongodb` driver.
///
/// ```rust
/// use mongodm::prelude::*;
///
/// // ...
/// ```
pub mod prelude {
    #[doc(no_inline)]
    pub use crate::mongo::bson::{
        bson, de::Error as BsonDeError, doc, from_bson, oid::ObjectId, ser::Error as BsonSerError,
        to_bson, Bson, DateTime as BsonDateTime, Document as BsonDocument,
    };
    #[doc(no_inline)]
    pub use crate::mongo::{
        error::{
            BulkWriteError as MongoBulkWriteError, BulkWriteFailure as MongoBulkWriteFailure,
            CommandError as MongoCommandError, Error as MongoError, ErrorKind as MongoErrorKind,
            WriteConcernError as MongoWriteConcernError, WriteError as MongoWriteError,
            WriteFailure as MongoWriteFailure,
        },
        options::{
            Acknowledgment as MongoAcknowledgment, AggregateOptions as MongoAggregateOptions,
            AuthMechanism as MongoAuthMechanism, ClientOptions as MongoClientOptions,
            Collation as MongoCollation, CollectionOptions as MongoCollectionOptions,
            CountOptions as MongoCountOptions,
            CreateCollectionOptions as MongoCreateCollectionOptions, Credential as MongoCredential,
            CursorType as MongoCursorType, DatabaseOptions as MongoDatabaseOptions,
            DeleteOptions as MongoDeleteOptions, DistinctOptions as MongoDistinctOptions,
            DriverInfo as MongoDriverInfo, DropCollectionOptions as MongoDropCollectionOptions,
            DropDatabaseOptions as MongoDropDatabaseOptions,
            EstimatedDocumentCountOptions as MongoEstimatedDocumentCountOptions,
            FindOneAndDeleteOptions as MongoFindOneAndDeleteOptions,
            FindOneAndReplaceOptions as MongoFindOneAndReplaceOptions,
            FindOneAndUpdateOptions as MongoFindOneAndUpdateOptions,
            FindOneOptions as MongoFindOneOptions, FindOptions as MongoFindOptions,
            Hint as MongoHint, InsertManyOptions as MongoInsertManyOptions,
            InsertOneOptions as MongoInsertOneOptions,
            ListCollectionsOptions as MongoListCollectionsOptions,
            ListDatabasesOptions as MongoListDatabasesOptions, Predicate as MongoPredicate,
            ReadConcern as MongoReadConcern, ReadConcernLevel as MongoReadConcernLevel,
            ReadPreference as MongoReadPreference,
            ReadPreferenceOptions as MongoReadPreferenceOptions,
            ReplaceOptions as MongoReplaceOptions, ReturnDocument as MongoReturnDocument,
            SelectionCriteria as MongoSelectionCriteria, StreamAddress as MongoStreamAddress,
            TagSet as MongoTagSet, Tls as MongoTls, TlsOptions as MongoTlsOptions,
            UpdateModifications as MongoUpdateModifications, UpdateOptions as MongoUpdateOptions,
            ValidationAction as MongoValidationAction, ValidationLevel as MongoValidationLevel,
            WriteConcern as MongoWriteConcern,
        },
        results::{
            DeleteResult as MongoDeleteResult, InsertManyResult as MongoInsertManyResult,
            InsertOneResult as MongoInsertOneResult, UpdateResult as MongoUpdateResult,
        },
        Client as MongoClient, Collection as MongoCollection, Cursor as MongoCursor,
        Database as MongoDatabase,
    };
    #[doc(no_inline)]
    pub use crate::ToRepository as _;
    #[doc(no_inline)]
    pub use crate::{
        f, field, operator::*, CollectionConfig, Index, IndexOption, Indexes, Model, ModelCursor,
        Repository, SortOrder,
    };
    #[doc(no_inline)]
    pub use futures_core::Stream;
    #[doc(no_inline)]
    pub use futures_util::FutureExt as _;
    #[doc(no_inline)]
    pub use futures_util::StreamExt as _;
}
