syntax = "proto3";

package evchargers;

option go_package = "./proto;evchargers";

service Evchargers {
	rpc Search(SearchRequest) returns (SearchResponse) {}
	rpc ReferenceData(ReferenceDataRequest) returns (ReferenceDataResponse) {}
}


// Search by giving a coordinate and a max distance, or bounding box and optional filters
message SearchRequest {
	// Coordinates from which to begin search
	Coordinates location = 1;
	// Search distance from point in metres, defaults to 5000m
	int64 distance = 2;
	// Bounding box to search within (top left and bottom right coordinates)
	BoundingBox box = 3;
	// Maximum number of results to return, defaults to 100
	int64 max_results = 4;
	// Country ID
	string country_id = 5;
	// IDs of the the EV charger operator
	repeated string operators = 6;
	// IDs of the connection type
	repeated string connection_types = 7;
	// Supported charging levels
	repeated string levels = 8;
	// Minimum power in KW. Note: data not available for many chargers
	int64 min_power = 9;
	// Usage of the charge point (is it public, membership required, etc)
	repeated string usage_types = 11;

	// TODO https://openchargemap.org/site/develop/api#POI
	// verbose / compact to only return IDs for ref data
	// polygon
	// polyline
}

message Coordinates {
	float latitude = 1;
	float longitude = 2;
}

// Box to search (top left and bottom right coordinates)
message BoundingBox {
	Coordinates bottom_left = 1;
	Coordinates top_right = 2;
}

message SearchResponse {
	repeated Poi pois = 1;
}

message Poi {
	// The ID of the charger
	string id = 1;
	// The ID of the data provider
	string data_provider_id = 2;
	// The ID of the operator of the charger
	string operator_id = 3;
	// The type of usage for this charger point (is it public, membership required, etc)
	string usage_type_id = 4;
	// The address
	Address address = 5;
	// The connections available at this charge point
	repeated Connection connections = 6;
	// The number of charging points
	int64 num_points = 7;
	// The cost of charging
	string cost = 8;
	// The operator
	Operator operator = 10;
	// The type of usage
	UsageType usage_type = 11;

}

message Address {
	Coordinates location = 1;
	string title = 2;
	string address_line_1 = 3;
	string address_line_2 = 4;
	string town = 5;
	string state_or_province = 6;
	// Any comments about how to access the charger
	string access_comments = 7;
	string postcode = 8;
	string country_id = 9;
	Country country = 10;
	string lat_lng = 11;
}

message Connection {
	// The ID of the connection type
	string connection_type_id = 1;
	string reference = 2;
	// The level of charging power available
	string level_id = 4;
	// The amps offered
	float amps = 5;
	// The voltage offered
	float voltage = 6;
	// The power in KW
	float power = 7;
	// The current
	string current = 8;
	ConnectionType connection_type = 9;

	ChargerType level = 10;
}

// Retrieve reference data as used by this API and in conjunction with the Search endpoint
message ReferenceDataRequest {}

message ReferenceDataResponse {
	// The types of charger
	repeated ChargerType charger_types = 1;
	// The types of connection
	repeated ConnectionType connection_types = 2;
	// The types of current
	repeated CurrentType current_types = 3;
	// The countries
	repeated Country countries = 4;
	// The providers of the charger data
	repeated DataProvider data_providers = 5;
	// The companies operating the chargers
	repeated Operator operators = 6;
	// The status of the charger
	repeated StatusType status_types = 7;
	// The status of a submission
	repeated SubmissionStatusType submission_status_types = 8;
	// The different types of usage
	repeated UsageType usage_types = 9;
	// The types of user comment
	repeated UserCommentType user_comment_types = 10;
	// The types of checkin status
	repeated CheckinStatusType checkin_status_types = 11;
}

message ChargerType {
	string id = 1;
	string title = 2;
	string comments = 3;
	// Is this 40KW+
	bool is_fast_charge_capable = 4;
}

message ConnectionType {
	string id = 1;
	string title = 2;
	string formal_name = 3;
	bool is_discontinued = 4;
	bool is_obsolete = 5;
}

message CurrentType {
	string id = 1;
	string title = 2;
	string description = 3;
}

message Country {
	string id = 1;
	string title = 2;
	string iso_code = 3;
	string continent_code = 4;
}

message DataProvider {
	string id = 1;
	string title = 2;
	string website = 3;
	string comments = 4;
	DataProviderStatusType data_provider_status_type = 5;
	// How is this data licensed
	string license = 6;
}

message DataProviderStatusType {
	string id = 1;
	string title = 2;
	bool is_provider_enabled = 3;
}

message Operator {
	string id = 1;
	string title = 2;
	string website = 3;
	string comments = 4;
	// Is this operator a private individual vs a company
	bool is_private_individual = 5;
	string contact_email = 6;
	string phone_primary = 7;
	string phone_secondary = 8;
	string fault_report_email = 9;
}

message StatusType {
	string id = 1;
	string title = 2;
	bool is_operational = 3;
}

message SubmissionStatusType {
	string id = 1;
	string title = 2;
	bool is_live = 3;
}

message UsageType {
	string id = 1;
	string title = 2;
	bool is_pay_at_location = 3;
	bool is_membership_required = 4;
	bool is_access_key_required = 5;
}

message UserCommentType {
	string id = 1;
	string title = 2;
}

message CheckinStatusType {
	string id = 1;
	string title = 2;
	bool is_positive = 3;
	bool is_automated = 4;
}