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mod graphiql_source; mod playground_source; pub use graphiql_source::graphiql_source; pub use playground_source::playground_source; use crate::{GQLObject, PositionError, Result, Schema, Variables}; use serde::ser::SerializeMap; use serde::{Serialize, Serializer}; use std::ops::Deref; #[derive(Deserialize, Clone, PartialEq, Debug)] pub struct GQLRequest { pub query: String, #[serde(rename = "operationName")] pub operation_name: Option<String>, pub variables: Option<serde_json::Value>, } impl GQLRequest { pub async fn execute<Query, Mutation>(self, schema: &Schema<Query, Mutation>) -> GQLResponse where Query: GQLObject + Send + Sync, Mutation: GQLObject + Send + Sync, { let vars = match self.variables { Some(value) => match Variables::parse_from_json(value) { Ok(vars) => Some(vars), Err(err) => return GQLResponse(Err(err)), }, None => None, }; let query = schema.query(&self.query); let query = match &vars { Some(vars) => query.variables(vars), None => query, }; let query = match &self.operation_name { Some(operation_name) => query.operator_name(operation_name), None => query, }; GQLResponse(query.execute().await) } } pub struct GQLResponse(Result<serde_json::Value>); impl Serialize for GQLResponse { fn serialize<S: Serializer>(&self, serializer: S) -> std::result::Result<S::Ok, S::Error> { match &self.0 { Ok(res) => { let mut map = serializer.serialize_map(None)?; map.serialize_key("data")?; map.serialize_value(&res)?; map.end() } Err(err) => { let mut map = serializer.serialize_map(None)?; map.serialize_key("errors")?; map.serialize_value(&[GQLError(err)])?; map.end() } } } } struct GQLError<'a>(&'a anyhow::Error); impl<'a> Deref for GQLError<'a> { type Target = anyhow::Error; fn deref(&self) -> &Self::Target { self.0 } } impl<'a> Serialize for GQLError<'a> { fn serialize<S>(&self, serializer: S) -> std::result::Result<S::Ok, S::Error> where S: Serializer, { let mut map = serializer.serialize_map(None)?; match self.0.downcast_ref::<PositionError>() { Some(err) => { map.serialize_key("message")?; map.serialize_value(&err.to_string())?; map.serialize_key("locations")?; map.serialize_value(&[serde_json::json! ({ "line": err.position.line, "column": err.position.column, })])?; } None => { map.serialize_key("message")?; map.serialize_value(&self.0.to_string())?; } } map.end() } } #[cfg(test)] mod tests { use super::*; use crate::ErrorWithPosition; use graphql_parser::Pos; use serde_json::json; #[test] fn test_request() { let request: GQLRequest = serde_json::from_value(json! ({ "query": "{ a b c }" })) .unwrap(); assert!(request.variables.is_none()); assert!(request.operation_name.is_none()); assert_eq!(request.query, "{ a b c }"); } #[test] fn test_request_with_operation_name() { let request: GQLRequest = serde_json::from_value(json! ({ "query": "{ a b c }", "operationName": "a" })) .unwrap(); assert!(request.variables.is_none()); assert_eq!(request.operation_name.as_deref(), Some("a")); assert_eq!(request.query, "{ a b c }"); } #[test] fn test_request_with_variables() { let request: GQLRequest = serde_json::from_value(json! ({ "query": "{ a b c }", "variables": { "v1": 100, "v2": [1, 2, 3], "v3": "str", } })) .unwrap(); assert_eq!( request.variables, Some(json!({ "v1": 100, "v2": [1, 2, 3], "v3": "str", })) ); assert!(request.operation_name.is_none()); assert_eq!(request.query, "{ a b c }"); } #[test] fn test_response_data() { let resp = GQLResponse(Ok(json!({"ok": true}))); assert_eq!( serde_json::to_value(resp).unwrap(), json! ({ "data": { "ok": true, } }) ); } #[test] fn test_response_error() { let resp = GQLResponse(Err(anyhow::anyhow!("error"))); assert_eq!( serde_json::to_value(resp).unwrap(), json!({ "errors": [{ "message":"error" }] }) ); } #[test] fn test_response_error_with_pos() { let resp = GQLResponse(Err(anyhow::anyhow!("error") .with_position(Pos { line: 10, column: 20, }) .into())); assert_eq!( serde_json::to_value(resp).unwrap(), json!({ "errors": [{ "message":"error", "locations": [ {"line": 10, "column": 20} ] }] }) ); } }