import {
	servicesListItem,
	metricItem,
	topEndpointListItem,
	externalErrCodeMetricsItem,
	customMetricsItem,
	externalMetricsItem,
	dbOverviewMetricsItem,
	externalMetricsAvgDurationItem,
} from "../actions/MetricsActions";
import { MetricsActionTypes as ActionTypes } from "../actions/MetricsActions/metricsActionTypes";

export type MetricsInitialState = {
	serviceList?: servicesListItem[];
	metricItems?: metricItem[];
	topEndpointListItem?: topEndpointListItem[];
	externalMetricsAvgDurationItem?: externalMetricsAvgDurationItem[];
	externalErrCodeMetricsItem?: externalErrCodeMetricsItem[];
	externalMetricsItem?: externalMetricsItem[];
	dbOverviewMetricsItem?: dbOverviewMetricsItem[];
	customMetricsItem?: customMetricsItem[];
};
export const metricsInitialState: MetricsInitialState = {
	serviceList: [
		{
			serviceName: "",
			p99: 0,
			avgDuration: 0,
			numCalls: 0,
			callRate: 0,
			numErrors: 0,
			errorRate: 0,
		},
	],
	metricItems: [
		{
			timestamp: 0,
			p50: 0,
			p95: 0,
			p99: 0,
			numCalls: 0,
			callRate: 0.0,
			numErrors: 0,
			errorRate: 0,
		},
	],
	topEndpointListItem: [
		{
			p50: 0,
			p90: 0,
			p99: 0,
			numCalls: 0,
			name: "",
		},
	],
	externalMetricsAvgDurationItem: [
		{
			avgDuration: 0,
			timestamp: 0,
		},
	],
	externalErrCodeMetricsItem: [
		{
			callRate: 0,
			externalHttpUrl: "",
			numCalls: 0,
			timestamp: 0,
		},
	],
	externalMetricsItem: [
		{
			avgDuration: 0,
			callRate: 0,
			externalHttpUrl: "",
			numCalls: 0,
			timestamp: 0,
		},
	],
	dbOverviewMetricsItem: [
		{
			avgDuration: 0,
			callRate: 0,
			dbSystem: "",
			numCalls: 0,
			timestamp: 0,
		},
	],
	customMetricsItem: [
		{
			timestamp: 0,
			value: 0,
		},
	],
};

type ActionType = {
	type: string;
	payload: any;
};

export const metricsReducer = (
	state: MetricsInitialState = metricsInitialState,
	action: ActionType,
) => {
	switch (action.type) {
		case ActionTypes.getFilteredTraceMetrics:
			return {
				...state,
				customMetricsItem: action.payload,
			};
		case ActionTypes.getServiceMetrics:
			return {
				...state,
				metricItems: action.payload,
			};
		case ActionTypes.getDbOverviewMetrics:
			return {
				...state,
				dbOverviewMetricsItem: action.payload,
			};
		case ActionTypes.getExternalMetrics:
			return {
				...state,
				externalMetricsItem: action.payload,
			};
		case ActionTypes.getTopEndpoints:
			return {
				...state,
				topEndpointListItem: action.payload,
			};
		case ActionTypes.getErrCodeMetrics:
			return {
				...state,
				externalErrCodeMetricsItem: action.payload,
			};
		case ActionTypes.getAvgDurationMetrics:
			return {
				...state,
				externalMetricsAvgDurationItem: action.payload,
			};

		case ActionTypes.getServicesList:
			return {
				...state,
				serviceList: action.payload,
			};
		default:
			return {
				...state,
			};
	}
};