import axios from 'api';
import { ErrorResponseHandler } from 'api/ErrorResponseHandler';
import { UnderscoreToDotMap } from 'api/utils';
import { AxiosError } from 'axios';
import { ErrorResponse, SuccessResponse } from 'types/api';
import { BaseAutocompleteData } from 'types/api/queryBuilder/queryAutocompleteResponse';
import { TagFilter } from 'types/api/queryBuilder/queryBuilderData';

import { K8sBaseFilters } from '../Base/types';

export interface K8sClustersListPayload {
	filters: TagFilter;
	groupBy?: BaseAutocompleteData[];
	offset?: number;
	limit?: number;
	orderBy?: {
		columnName: string;
		order: 'asc' | 'desc';
	};
}

export interface K8sClusterData {
	clusterUID: string;
	cpuUsage: number;
	cpuAllocatable: number;
	memoryUsage: number;
	memoryAllocatable: number;
	meta: {
		k8s_cluster_name: string;
		k8s_cluster_uid: string;
	};
}

export interface K8sClustersListResponse {
	status: string;
	data: {
		type: string;
		records: K8sClusterData[];
		groups: null;
		total: number;
		sentAnyHostMetricsData: boolean;
		isSendingK8SAgentMetrics: boolean;
	};
}

// TODO(H4ad): Erase this whole file when migrating to openapi
export const clustersMetaMap = [
	{ dot: 'k8s.cluster.name', under: 'k8s_cluster_name' },
	{ dot: 'k8s.cluster.uid', under: 'k8s_cluster_uid' },
] as const;

export function mapClustersMeta(
	raw: Record<string, unknown>,
): K8sClusterData['meta'] {
	const out: Record<string, unknown> = { ...raw };
	clustersMetaMap.forEach(({ dot, under }) => {
		if (dot in raw) {
			const v = raw[dot];
			out[under] = typeof v === 'string' ? v : raw[under];
		}
	});
	return out as K8sClusterData['meta'];
}

export const getK8sClustersList = async (
	props: K8sBaseFilters,
	signal?: AbortSignal,
	headers?: Record<string, string>,
	dotMetricsEnabled = false,
): Promise<SuccessResponse<K8sClustersListResponse> | ErrorResponse> => {
	try {
		const requestProps = dotMetricsEnabled
			? {
					...props,
					filters: {
						...props.filters,
						items: props.filters.items.reduce<typeof props.filters.items>(
							(acc, item) => {
								if (item.value === undefined) {
									return acc;
								}
								if (
									item.key &&
									typeof item.key === 'object' &&
									'key' in item.key &&
									typeof item.key.key === 'string'
								) {
									const mappedKey = UnderscoreToDotMap[item.key.key] ?? item.key.key;
									acc.push({
										...item,
										key: { ...item.key, key: mappedKey },
									});
								} else {
									acc.push(item);
								}
								return acc;
							},
							[] as typeof props.filters.items,
						),
					},
				}
			: props;

		const response = await axios.post('/clusters/list', requestProps, {
			signal,
			headers,
		});
		const payload: K8sClustersListResponse = response.data;

		payload.data.records = payload.data.records.map((record) => ({
			...record,
			meta: mapClustersMeta(record.meta as Record<string, unknown>),
		}));

		return {
			statusCode: 200,
			error: null,
			message: 'Success',
			payload,
			params: requestProps,
		};
	} catch (error) {
		return ErrorResponseHandler(error as AxiosError);
	}
};
