supabase-client-query 0.2.2

use std::marker::PhantomData;

use serde::de::DeserializeOwned;

use supabase_client_core::SupabaseResponse;

use crate::backend::QueryBackend;
use crate::filter::Filterable;
use crate::modifier::Modifiable;
use crate::sql::{FilterCondition, ParamStore, SqlParts};

/// Builder for DELETE queries. Implements Filterable and Modifiable.
/// Call `.select()` to add RETURNING clause.
pub struct DeleteBuilder<T> {
    pub(crate) backend: QueryBackend,
    pub(crate) parts: SqlParts,
    pub(crate) params: ParamStore,
    pub(crate) _marker: PhantomData<T>,
}

impl<T> Filterable for DeleteBuilder<T> {
    fn filters_mut(&mut self) -> &mut Vec<FilterCondition> {
        &mut self.parts.filters
    }
    fn params_mut(&mut self) -> &mut ParamStore {
        &mut self.params
    }
}

impl<T> Modifiable for DeleteBuilder<T> {
    fn parts_mut(&mut self) -> &mut SqlParts {
        &mut self.parts
    }
}

impl<T> DeleteBuilder<T> {
    /// Override the schema for this query.
    ///
    /// Generates `"schema"."table"` instead of the default schema.
    pub fn schema(mut self, schema: &str) -> Self {
        self.parts.schema_override = Some(schema.to_string());
        self
    }

    /// Add RETURNING * clause.
    pub fn select(mut self) -> Self {
        self.parts.returning = Some("*".to_string());
        self
    }

    /// Add RETURNING with specific columns.
    pub fn select_columns(mut self, columns: &str) -> Self {
        if columns == "*" || columns.is_empty() {
            self.parts.returning = Some("*".to_string());
        } else {
            let quoted = columns
                .split(',')
                .map(|c| {
                    let c = c.trim();
                    if c.contains('(') || c.contains('*') || c.contains('"') {
                        c.to_string()
                    } else {
                        format!("\"{}\"", c)
                    }
                })
                .collect::<Vec<_>>()
                .join(", ");
            self.parts.returning = Some(quoted);
        }
        self
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    use crate::backend::QueryBackend;
    use crate::sql::{ParamStore, SqlOperation, SqlParts};
    use serde_json::Value as JsonValue;
    use std::marker::PhantomData;
    use std::sync::Arc;
    use wiremock::matchers::{method, path};
    use wiremock::{Mock, MockServer, ResponseTemplate};

    fn make_delete_builder() -> DeleteBuilder<JsonValue> {
        DeleteBuilder {
            backend: QueryBackend::Rest {
                http: reqwest::Client::new(),
                base_url: Arc::from("http://localhost"),
                api_key: Arc::from("test-key"),
                schema: "public".to_string(),
            },
            parts: SqlParts::new(SqlOperation::Delete, "public", "users"),
            params: ParamStore::new(),
            _marker: PhantomData,
        }
    }

    // ---- Builder method tests ----

    #[test]
    fn test_schema_sets_override() {
        let builder = make_delete_builder().schema("custom");
        assert_eq!(builder.parts.schema_override.as_deref(), Some("custom"));
    }

    #[test]
    fn test_select_sets_returning_star() {
        let builder = make_delete_builder().select();
        assert_eq!(builder.parts.returning.as_deref(), Some("*"));
    }

    #[test]
    fn test_select_columns_star() {
        let builder = make_delete_builder().select_columns("*");
        assert_eq!(builder.parts.returning.as_deref(), Some("*"));
    }

    #[test]
    fn test_select_columns_empty() {
        let builder = make_delete_builder().select_columns("");
        assert_eq!(builder.parts.returning.as_deref(), Some("*"));
    }

    #[test]
    fn test_select_columns_specific() {
        let builder = make_delete_builder().select_columns("id, name");
        assert_eq!(builder.parts.returning.as_deref(), Some("\"id\", \"name\""));
    }

    #[test]
    fn test_select_columns_complex_expression() {
        let builder = make_delete_builder().select_columns("count(*)");
        assert_eq!(builder.parts.returning.as_deref(), Some("count(*)"));
    }

    // ---- execute() via wiremock ----

    #[tokio::test]
    async fn test_execute_delete_success_with_returning() {
        let mock_server = MockServer::start().await;
        Mock::given(method("DELETE"))
            .and(path("/rest/v1/users"))
            .respond_with(
                ResponseTemplate::new(200)
                    .set_body_json(serde_json::json!([{"id": 1, "name": "Alice"}])),
            )
            .mount(&mock_server)
            .await;

        let mut parts = SqlParts::new(SqlOperation::Delete, "public", "users");
        parts.returning = Some("*".to_string());

        let builder: DeleteBuilder<JsonValue> = DeleteBuilder {
            backend: QueryBackend::Rest {
                http: reqwest::Client::new(),
                base_url: Arc::from(mock_server.uri().as_str()),
                api_key: Arc::from("test-key"),
                schema: "public".to_string(),
            },
            parts,
            params: ParamStore::new(),
            _marker: PhantomData,
        };

        let resp = builder.execute().await;
        assert!(resp.is_ok());
        assert_eq!(resp.data.len(), 1);
        assert_eq!(resp.data[0]["id"], 1);
    }

    #[tokio::test]
    async fn test_execute_delete_success_no_returning() {
        let mock_server = MockServer::start().await;
        Mock::given(method("DELETE"))
            .and(path("/rest/v1/users"))
            .respond_with(ResponseTemplate::new(204))
            .mount(&mock_server)
            .await;

        let parts = SqlParts::new(SqlOperation::Delete, "public", "users");

        let builder: DeleteBuilder<JsonValue> = DeleteBuilder {
            backend: QueryBackend::Rest {
                http: reqwest::Client::new(),
                base_url: Arc::from(mock_server.uri().as_str()),
                api_key: Arc::from("test-key"),
                schema: "public".to_string(),
            },
            parts,
            params: ParamStore::new(),
            _marker: PhantomData,
        };

        let resp = builder.execute().await;
        assert!(resp.is_ok());
        assert!(resp.data.is_empty());
    }

    #[tokio::test]
    async fn test_execute_delete_error() {
        let mock_server = MockServer::start().await;
        Mock::given(method("DELETE"))
            .and(path("/rest/v1/users"))
            .respond_with(
                ResponseTemplate::new(403)
                    .set_body_json(serde_json::json!({
                        "message": "Permission denied",
                        "code": "42501"
                    })),
            )
            .mount(&mock_server)
            .await;

        let parts = SqlParts::new(SqlOperation::Delete, "public", "users");

        let builder: DeleteBuilder<JsonValue> = DeleteBuilder {
            backend: QueryBackend::Rest {
                http: reqwest::Client::new(),
                base_url: Arc::from(mock_server.uri().as_str()),
                api_key: Arc::from("test-key"),
                schema: "public".to_string(),
            },
            parts,
            params: ParamStore::new(),
            _marker: PhantomData,
        };

        let resp = builder.execute().await;
        assert!(resp.is_err());
        match resp.error.as_ref().unwrap() {
            supabase_client_core::SupabaseError::PostgRest { status, message, code } => {
                assert_eq!(*status, 403);
                assert_eq!(message, "Permission denied");
                assert_eq!(code.as_deref(), Some("42501"));
            }
            other => panic!("Expected PostgRest error, got {:?}", other),
        }
    }
}

// REST-only mode: only DeserializeOwned + Send needed
#[cfg(not(feature = "direct-sql"))]
impl<T> DeleteBuilder<T>
where
    T: DeserializeOwned + Send,
{
    /// Execute the DELETE query.
    pub async fn execute(self) -> SupabaseResponse<T> {
        let QueryBackend::Rest { ref http, ref base_url, ref api_key, ref schema } = self.backend;
        let (url, headers) = match crate::postgrest::build_postgrest_delete(
            base_url, &self.parts, &self.params,
        ) {
            Ok(r) => r,
            Err(e) => return SupabaseResponse::error(
                supabase_client_core::SupabaseError::QueryBuilder(e),
            ),
        };
        crate::postgrest_execute::execute_rest(
            http, reqwest::Method::DELETE, &url, headers, None, api_key, schema, &self.parts,
        ).await
    }
}

// Direct-SQL mode: additional FromRow + Unpin bounds
#[cfg(feature = "direct-sql")]
impl<T> DeleteBuilder<T>
where
    T: DeserializeOwned + Send + Unpin + for<'r> sqlx::FromRow<'r, sqlx::postgres::PgRow>,
{
    /// Execute the DELETE query.
    pub async fn execute(self) -> SupabaseResponse<T> {
        match &self.backend {
            QueryBackend::Rest { http, base_url, api_key, schema } => {
                let (url, headers) = match crate::postgrest::build_postgrest_delete(
                    base_url, &self.parts, &self.params,
                ) {
                    Ok(r) => r,
                    Err(e) => return SupabaseResponse::error(
                        supabase_client_core::SupabaseError::QueryBuilder(e),
                    ),
                };
                crate::postgrest_execute::execute_rest(
                    http, reqwest::Method::DELETE, &url, headers, None, api_key, schema, &self.parts,
                ).await
            }
            QueryBackend::DirectSql { pool } => {
                crate::execute::execute_typed::<T>(pool, &self.parts, &self.params).await
            }
        }
    }
}