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use rbson::{bson, Bson, to_bson};
use rbson::spec::BinarySubtype;
use chrono::{Utc};
use sqlx_core::column::Column;
use sqlx_core::decode::Decode;
use sqlx_core::error::BoxDynError;
use sqlx_core::row::Row;
use sqlx_core::sqlite::SqliteRow;
use sqlx_core::sqlite::{Sqlite, SqliteValue, SqliteValueRef};
use sqlx_core::type_info::TypeInfo;
use sqlx_core::value::ValueRef;
use crate::convert::{JsonCodec, RefJsonCodec, ResultCodec};
use crate::{to_bson_macro};
use crate::db::db_adapter::DataDecoder;
impl<'c> JsonCodec for SqliteValueRef<'c> {
fn try_to_bson(self) -> crate::Result<Bson> {
let type_string = self.type_info().name().to_owned();
return match type_string.as_str() {
"NULL" => Ok(Bson::Null),
"TEXT" => {
let r: Option<String> = Decode::<'_, Sqlite>::decode(self)?;
return Ok(to_bson_macro!(r));
}
"BOOLEAN" => {
let r: Option<bool> = Decode::<'_, Sqlite>::decode(self)?;
return Ok(to_bson_macro!(r));
}
"INTEGER" => {
let r: Option<i64> = Decode::<'_, Sqlite>::decode(self)?;
return Ok(to_bson_macro!(r));
}
"REAL" => {
let r: Option<f64> = Decode::<'_, Sqlite>::decode(self)?;
return Ok(to_bson_macro!(r));
}
"BLOB" => {
let r: Option<Vec<u8>> = Decode::<'_, Sqlite>::decode(self)?;
if let Some(r) = r {
return Ok(Bson::Binary(rbson::Binary {
subtype: BinarySubtype::Generic,
bytes: r,
}));
}
return Ok(Bson::Null);
}
"DATE" => {
let r: Option<chrono::NaiveDate> = Decode::<'_, Sqlite>::decode(self)?;
return Ok(to_bson(&r).unwrap_or_default());
}
"TIME" => {
let r: Option<chrono::NaiveTime> = Decode::<'_, Sqlite>::decode(self)?;
return Ok(to_bson(&r).unwrap_or_default());
}
"DATETIME" => {
let r: Option<chrono::NaiveDateTime> = Decode::<'_, Sqlite>::decode(self)?;
if let Some(dt) = r {
return Ok(Bson::String(dt.format("%Y-%m-%dT%H:%M:%S").to_string()));
}
return Ok(Bson::Null);
}
_ => {
let r: Option<Vec<u8>> = Decode::<'_, Sqlite>::decode(self)?;
if let Some(r) = r {
return Ok(Bson::Binary(rbson::Binary {
subtype: BinarySubtype::Generic,
bytes: r,
}));
}
return Ok(Bson::Null);
}
};
}
}
impl RefJsonCodec for Vec<SqliteRow> {
fn try_to_bson(&self, decoder: &dyn DataDecoder) -> crate::Result<Bson> {
let mut arr = Vec::with_capacity(self.len());
for row in self {
let mut m = rbson::Document::new();
let columns = row.columns();
for x in columns {
let key = x.name();
let v: SqliteValueRef = row.try_get_raw(key)?;
let mut bson = v.try_to_bson()?;
decoder.decode(key, &mut bson)?;
m.insert(key.to_owned(), bson);
}
arr.push(Bson::Document(m));
}
Ok(Bson::from(arr))
}
}
