use gcloud_sdk::google::firestore::v1::value;
use serde::{Deserialize, Serialize, Serializer};
use crate::db::split_document_path;
use crate::errors::*;
use crate::FirestoreValue;
pub(crate) const FIRESTORE_REFERENCE_TYPE_TAG_TYPE: &str = "FirestoreReference";
#[derive(Serialize, Deserialize, Clone, Debug, Eq, PartialEq, Hash, Default)]
pub struct FirestoreReference(pub String);
impl FirestoreReference {
pub fn new(reference: String) -> Self {
FirestoreReference(reference)
}
pub fn as_str(&self) -> &str {
&self.0
}
pub fn split(&self, document_path: &str) -> (Option<String>, String, String) {
let (parent_raw_path, document_id) = split_document_path(self.as_str());
let parent_path = parent_raw_path.replace(format!("{document_path}/").as_str(), "");
let split_pos = parent_path.rfind('/').map(|pos| pos + 1).unwrap_or(0);
if split_pos == 0 {
(None, parent_path, document_id.to_string())
} else {
(
Some(parent_path[..split_pos - 1].to_string()),
parent_path[split_pos..].to_string(),
document_id.to_string(),
)
}
}
}
pub mod serialize_as_reference {
use serde::{Deserialize, Deserializer, Serializer};
pub fn serialize<S>(str: &String, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
serializer.serialize_newtype_struct(
crate::firestore_serde::FIRESTORE_REFERENCE_TYPE_TAG_TYPE,
&str,
)
}
pub fn deserialize<'de, D>(deserializer: D) -> Result<String, D::Error>
where
D: Deserializer<'de>,
{
String::deserialize(deserializer)
}
}
pub fn serialize_reference_for_firestore<T: ?Sized + Serialize>(
value: &T,
none_as_null: bool,
) -> Result<FirestoreValue, FirestoreError> {
struct ReferenceSerializer {
none_as_null: bool,
}
impl Serializer for ReferenceSerializer {
type Ok = FirestoreValue;
type Error = FirestoreError;
type SerializeSeq = crate::firestore_serde::serializer::SerializeVec;
type SerializeTuple = crate::firestore_serde::serializer::SerializeVec;
type SerializeTupleStruct = crate::firestore_serde::serializer::SerializeVec;
type SerializeTupleVariant = crate::firestore_serde::serializer::SerializeTupleVariant;
type SerializeMap = crate::firestore_serde::serializer::SerializeMap;
type SerializeStruct = crate::firestore_serde::serializer::SerializeMap;
type SerializeStructVariant = crate::firestore_serde::serializer::SerializeStructVariant;
fn serialize_bool(self, _v: bool) -> Result<Self::Ok, Self::Error> {
Err(FirestoreError::SerializeError(
FirestoreSerializationError::from_message(
"Reference serializer doesn't support this type",
),
))
}
fn serialize_i8(self, _v: i8) -> Result<Self::Ok, Self::Error> {
Err(FirestoreError::SerializeError(
FirestoreSerializationError::from_message(
"Reference serializer doesn't support this type",
),
))
}
fn serialize_i16(self, _v: i16) -> Result<Self::Ok, Self::Error> {
Err(FirestoreError::SerializeError(
FirestoreSerializationError::from_message(
"Reference serializer doesn't support this type",
),
))
}
fn serialize_i32(self, _v: i32) -> Result<Self::Ok, Self::Error> {
Err(FirestoreError::SerializeError(
FirestoreSerializationError::from_message(
"Reference serializer doesn't support this type",
),
))
}
fn serialize_i64(self, _v: i64) -> Result<Self::Ok, Self::Error> {
Err(FirestoreError::SerializeError(
FirestoreSerializationError::from_message(
"Reference serializer doesn't support this type",
),
))
}
fn serialize_u8(self, _v: u8) -> Result<Self::Ok, Self::Error> {
Err(FirestoreError::SerializeError(
FirestoreSerializationError::from_message(
"Reference serializer doesn't support this type",
),
))
}
fn serialize_u16(self, _v: u16) -> Result<Self::Ok, Self::Error> {
Err(FirestoreError::SerializeError(
FirestoreSerializationError::from_message(
"Reference serializer doesn't support this type",
),
))
}
fn serialize_u32(self, _v: u32) -> Result<Self::Ok, Self::Error> {
Err(FirestoreError::SerializeError(
FirestoreSerializationError::from_message(
"Reference serializer doesn't support this type",
),
))
}
fn serialize_u64(self, _v: u64) -> Result<Self::Ok, Self::Error> {
Err(FirestoreError::SerializeError(
FirestoreSerializationError::from_message(
"Reference serializer doesn't support this type",
),
))
}
fn serialize_f32(self, _v: f32) -> Result<Self::Ok, Self::Error> {
Err(FirestoreError::SerializeError(
FirestoreSerializationError::from_message(
"Reference serializer doesn't support this type",
),
))
}
fn serialize_f64(self, _v: f64) -> Result<Self::Ok, Self::Error> {
Err(FirestoreError::SerializeError(
FirestoreSerializationError::from_message(
"Reference serializer doesn't support this type",
),
))
}
fn serialize_char(self, _v: char) -> Result<Self::Ok, Self::Error> {
Err(FirestoreError::SerializeError(
FirestoreSerializationError::from_message(
"Reference serializer doesn't support this type",
),
))
}
fn serialize_str(self, v: &str) -> Result<Self::Ok, Self::Error> {
Ok(FirestoreValue::from(
gcloud_sdk::google::firestore::v1::Value {
value_type: Some(value::ValueType::ReferenceValue(v.to_string())),
},
))
}
fn serialize_bytes(self, _v: &[u8]) -> Result<Self::Ok, Self::Error> {
Err(FirestoreError::SerializeError(
FirestoreSerializationError::from_message(
"Reference serializer doesn't support this type",
),
))
}
fn serialize_none(self) -> Result<Self::Ok, Self::Error> {
if self.none_as_null {
Ok(FirestoreValue::from(
gcloud_sdk::google::firestore::v1::Value {
value_type: Some(value::ValueType::NullValue(0)),
},
))
} else {
Ok(FirestoreValue::from(
gcloud_sdk::google::firestore::v1::Value { value_type: None },
))
}
}
fn serialize_some<T: ?Sized + Serialize>(self, value: &T) -> Result<Self::Ok, Self::Error> {
value.serialize(self)
}
fn serialize_unit(self) -> Result<Self::Ok, Self::Error> {
Ok(FirestoreValue::from(
gcloud_sdk::google::firestore::v1::Value { value_type: None },
))
}
fn serialize_unit_struct(self, _name: &'static str) -> Result<Self::Ok, Self::Error> {
self.serialize_unit()
}
fn serialize_unit_variant(
self,
_name: &'static str,
_variant_index: u32,
variant: &'static str,
) -> Result<Self::Ok, Self::Error> {
self.serialize_str(variant)
}
fn serialize_newtype_struct<T: ?Sized + Serialize>(
self,
_name: &'static str,
value: &T,
) -> Result<Self::Ok, Self::Error> {
value.serialize(self)
}
fn serialize_newtype_variant<T: ?Sized + Serialize>(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_value: &T,
) -> Result<Self::Ok, Self::Error> {
Err(FirestoreError::SerializeError(
FirestoreSerializationError::from_message(
"Reference serializer doesn't support this type",
),
))
}
fn serialize_seq(self, _len: Option<usize>) -> Result<Self::SerializeSeq, Self::Error> {
Err(FirestoreError::SerializeError(
FirestoreSerializationError::from_message(
"Reference serializer doesn't support this type",
),
))
}
fn serialize_tuple(self, _len: usize) -> Result<Self::SerializeTuple, Self::Error> {
Err(FirestoreError::SerializeError(
FirestoreSerializationError::from_message(
"Reference serializer doesn't support this type",
),
))
}
fn serialize_tuple_struct(
self,
_name: &'static str,
_len: usize,
) -> Result<Self::SerializeTupleStruct, Self::Error> {
Err(FirestoreError::SerializeError(
FirestoreSerializationError::from_message(
"Reference serializer doesn't support this type",
),
))
}
fn serialize_tuple_variant(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_len: usize,
) -> Result<Self::SerializeTupleVariant, Self::Error> {
Err(FirestoreError::SerializeError(
FirestoreSerializationError::from_message(
"Reference serializer doesn't support this type",
),
))
}
fn serialize_map(self, _len: Option<usize>) -> Result<Self::SerializeMap, Self::Error> {
Err(FirestoreError::SerializeError(
FirestoreSerializationError::from_message(
"Reference serializer doesn't support this type",
),
))
}
fn serialize_struct(
self,
_name: &'static str,
_len: usize,
) -> Result<Self::SerializeStruct, Self::Error> {
Err(FirestoreError::SerializeError(
FirestoreSerializationError::from_message(
"Reference serializer doesn't support this type",
),
))
}
fn serialize_struct_variant(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_len: usize,
) -> Result<Self::SerializeStructVariant, Self::Error> {
Err(FirestoreError::SerializeError(
FirestoreSerializationError::from_message(
"Reference serializer doesn't support this type",
),
))
}
}
value.serialize(ReferenceSerializer { none_as_null })
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_reference_split() {
let reference = FirestoreReference::new(
"projects/test-project/databases/(default)/documents/test-collection/test-document-id/child-collection/child-document-id"
.to_string(),
);
let (parent_path, collection_name, document_id) =
reference.split("projects/test-project/databases/(default)/documents");
assert_eq!(
parent_path,
Some("test-collection/test-document-id".to_string())
);
assert_eq!(collection_name, "child-collection");
assert_eq!(document_id, "child-document-id");
}
}