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use derive_builder::Builder;
use crate::ToQueryString;
use itertools::Itertools;
use crate::condition::{Condition, ConditionValue};
use rand::random;
use std::collections::HashMap;
use serde::Serialize;
#[derive(Builder, Serialize, Clone)]
pub struct Mutation {
#[builder(default)]
pub set: Vec<MutationUnit>,
#[builder(default)]
pub delete: Vec<MutationUnit>
}
#[derive(Clone, Serialize)]
pub struct MutationUnit {
#[serde(flatten)]
uid: MutationUID,
#[serde(flatten)]
predicates: HashMap<String, MutationPredicateValue>,
}
impl MutationUnit {
pub fn new(uid: MutationUID) -> Self {
Self {
uid,
predicates: Default::default()
}
}
pub fn predicate(mut self, name: &str, value: MutationPredicateValue) -> Self {
self.predicates.insert(name.to_string(), value);
self
}
pub fn predicate_ref(&mut self, name: &str, value: MutationPredicateValue) {
self.predicates.insert(name.to_string(), value);
}
}
#[derive(Clone, Serialize)]
#[serde(untagged)]
pub enum MutationPredicateValue {
String(String),
Number(i64),
Float(f64),
Bool(bool),
Edge(MutationUID),
Edges(Vec<MutationUID>),
Null
}
impl MutationPredicateValue {
pub fn string(value: &str) -> MutationPredicateValue {
MutationPredicateValue::String(value.to_string())
}
}
#[derive(Clone, Serialize)]
pub struct MutationUID {
uid: String
}
impl MutationUID {
pub fn placeholder() -> MutationUID {
Self {
uid: MutationUID::generate_placeholder()
}
}
pub fn variable(name: &str) -> MutationUID {
Self {
uid: MutationUID::generate_variable(name)
}
}
pub fn uid(value: &str) -> MutationUID {
Self {
uid: value.to_string()
}
}
fn generate_placeholder() -> String {
format!("_:uid_placeholder_{}", random::<u128>())
}
fn generate_variable(name: &str) -> String {
format!("uid({})", name)
}
}
#[derive(Clone)]
pub enum MutationType {
SET
}
#[derive(Clone)]
pub enum MutationLiteral {
Literal(String),
String(String)
}
impl ToQueryString for Mutation {
fn to_query_string(&self) -> String {
unimplemented!()
}
}