/*
 * Copyright (C) 2022 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { SpSystemTrace } from '../SpSystemTrace';
import { TraceRow } from '../trace/base/TraceRow';
import { renders } from '../../database/ui-worker/ProcedureWorker';
import { SampleStruct, SampleRender } from '../../database/ui-worker/ProcedureWorkerBpftrace';
import { queryStartTime } from '../../database/sql/SqlLite.sql';
import { SpStatisticsHttpUtil } from '../../../statistics/util/SpStatisticsHttpUtil';

export class SpUserFileChart {
    private trace: SpSystemTrace;
    private currentFile: undefined;
    static userPluginData: [];

    constructor(trace: SpSystemTrace) {
        this.trace = trace;
    }

    async init(file: File | null) {
        if (!file) {
            let startTime = await queryStartTime();
            //@ts-ignore
            let folder = await this.initSample(startTime[0].start_ts, file);
            this.trace.rowsEL?.appendChild(folder);
        } else {
            let folder = await this.initSample(-1, file);
            this.trace.rowsEL?.appendChild(folder);
        }
    }

    async initSample(start_ts: number, file: unknown): Promise<TraceRow<SampleStruct>> {
        let traceRow = TraceRow.skeleton<SampleStruct>();
        traceRow.rowId = 'userPlugin';
        traceRow.index = 0;
        traceRow.rowType = TraceRow.ROW_TYPE_SAMPLE;
        traceRow.rowParentId = '';
        traceRow.folder = false;
        traceRow.style.height = '40px';
        traceRow.name = 'UserPluginRow';
        traceRow.selectChangeHandler = this.trace.selectChangeHandler;
        traceRow.favoriteChangeHandler = this.trace.favoriteChangeHandler;
        traceRow.findHoverStruct = () => {
            SampleStruct.hoverSampleStruct = traceRow.getHoverStruct();
        };
        //添加上传按钮
        traceRow.addRowSampleUpload();
        this.addTraceRowEventListener(traceRow, start_ts);
        //单独上传
        if (file) {
            this.getJsonData(file).then((res: unknown) => {
                //@ts-ignore
                const propertyData = res.data;
                //@ts-ignore
                const treeNodes = res.relation.children || [res.relation.RS.children[0]];
                SpUserFileChart.userPluginData = treeNodes.data[0] || [];
                const uniqueProperty = this.removeDuplicates(propertyData);
                const flattenTreeArray = this.getFlattenTreeData(treeNodes);
                //@ts-ignore
                const height = (Math.max(...flattenTreeArray.map((obj: unknown) => obj.depth)) + 1) * 20;
                const sampleProperty = this.setRelationDataProperty(flattenTreeArray, uniqueProperty);
                //@ts-ignore
                const startTS = flattenTreeArray[0].property[0].begin;
                traceRow.supplier = () =>
                    new Promise((resolve): void => {
                        //@ts-ignore
                        resolve(sampleProperty)
                    })
                traceRow.onThreadHandler = (useCache) => {
                    let context: CanvasRenderingContext2D;
                    if (traceRow.currentContext) {
                        context = traceRow.currentContext;
                    } else {
                        context = traceRow.collect ? this.trace.canvasFavoritePanelCtx! : this.trace.canvasPanelCtx!;
                    }
                    traceRow.canvasSave(context);
                    (renders.sample as SampleRender).renderMainThread(
                        {
                            context: context,
                            useCache: useCache,
                            type: 'bpftrace',
                            start_ts: startTS,
                            uniqueProperty: uniqueProperty,
                            //@ts-ignore
                            flattenTreeArray: flattenTreeArray
                        },
                        traceRow
                    );
                    traceRow.canvasRestore(context)
                };
                traceRow.style.height = `${height}px`;
            })
        } else {
            traceRow.supplier = () =>
                new Promise((resolve): void => {
                    resolve([]);
                });
            traceRow.onThreadHandler = (useCache) => {
                let context: CanvasRenderingContext2D;
                if (traceRow.currentContext) {
                    context = traceRow.currentContext;
                } else {
                    context = traceRow.collect ? this.trace.canvasFavoritePanelCtx! : this.trace.canvasPanelCtx!;
                }
                traceRow.canvasSave(context);
                (renders.sample as SampleRender).renderMainThread(
                    {
                        context: context,
                        useCache: useCache,
                        type: 'bpftrace',
                        start_ts: 0,
                        uniqueProperty: [],
                        flattenTreeArray: [],
                    },
                    traceRow
                );
                traceRow.canvasRestore(context);
            };
        }
        return traceRow;
    }

    /**
     * 监听文件上传事件
     * @param row 
     * @param start_ts 
     */

    //@ts-ignore
    addTraceRowEventListener(row: TraceRow<unknown>, start_ts: number) {
        row.uploadEl?.addEventListener('sample-file-change', (e: unknown) => {
            this.getJsonData(e).then((res: unknown) => {
                this.resetChartData(row);
                if (!res) {
                    row.supplier = () =>
                        new Promise((resolve): void => {
                            resolve([])
                        })
                    this.trace.traceSheetEL?.setMode('hidden');
                    row.style.height = '40px';
                    row.name = 'UserPluginRow'
                } else {
                    //@ts-ignore
                    const propertyData = res.data;
                    //@ts-ignore
                    SpUserFileChart.userPluginData = res.data[0];
                    //@ts-ignore
                    const treeNodes = res.relation.children || [res.relation.RS.children[0]];
                    const uniqueProperty = this.removeDuplicates(propertyData);
                    const flattenTreeArray = this.getFlattenTreeData(treeNodes);
                    //@ts-ignore
                    const height = (Math.max(...flattenTreeArray.map((obj: unknown) => obj.depth)) + 1) * 20;
                    const sampleProperty = this.setRelationDataProperty(flattenTreeArray, uniqueProperty);
                    //@ts-ignore
                    const startTS = start_ts > 0 ? start_ts : flattenTreeArray[0].property[0].begin;
                    row.supplier = () =>
                        new Promise((resolve): void => {
                            resolve(sampleProperty)
                        })
                    row.onThreadHandler = (useCache) => {
                        let context: CanvasRenderingContext2D;
                        if (row.currentContext) {
                            context = row.currentContext;
                        } else {
                            context = row.collect ? this.trace.canvasFavoritePanelCtx! : this.trace.canvasPanelCtx!;
                        }
                        row.canvasSave(context);
                        (renders.sample as SampleRender).renderMainThread(
                            {
                                context: context,
                                useCache: useCache,
                                type: 'bpftrace',
                                start_ts: startTS,
                                uniqueProperty: uniqueProperty,
                                //@ts-ignore
                                flattenTreeArray: flattenTreeArray
                            },
                            row
                        );
                        row.canvasRestore(context)
                    };
                    //@ts-ignore
                    row.name = `${res.relation.detail}(${res.relation.function_name})`;
                    row.style.height = `${height}px`;
                }
                this.trace.refreshCanvas(false)
            })
        })
    }

    /**
     * 清空缓存
     * @param row 
     */
    //@ts-ignore
    resetChartData(row: TraceRow<unknown>) {
        row.dataList = [];
        row.dataList2 = [];
        row.dataListCache = [];
        row.isComplete = false;
    }

    /**
     * 获取上传的文件内容 转为json格式
     * @param file 
     * @returns 
     */
    getJsonData(file: unknown): Promise<unknown> {
        return new Promise((resolve, reject) => {
            let reader = new FileReader();
            //@ts-ignore
            reader.readAsText(file.detail || file);
            reader.onloadend = (e: unknown) => {
                //@ts-ignore
                const fileContent = e.target?.result;
                if (fileContent === this.currentFile) {
                    this.currentFile = undefined;
                    resolve(false)
                } else {
                    this.currentFile = fileContent;
                }
                try {
                    resolve(JSON.parse(fileContent));
                    document.dispatchEvent(
                        new CustomEvent('file-correct')
                    )
                    SpStatisticsHttpUtil.addOrdinaryVisitAction({
                        event: 'bpftrace',
                        action: 'bpftrace',
                    });
                } catch (error) {
                    document.dispatchEvent(
                        new CustomEvent('file-error')
                    )
                }
            }
        })
    }

    /**
     * 树结构扁平化
     * @param treeData 
     * @param depth 
     * @param parentName 
     * @returns 
     */
    getFlattenTreeData(treeData: Array<unknown>, depth: number = 0, parentName: string = ''): Array<unknown> {
        let result: Array<object> = [];
        treeData.forEach(node => {
            //@ts-ignore
            const name: string = node['function_name'];
            const newNode: unknown = {};
            if (name && name.indexOf('unknown') > -1) {
                //@ts-ignore
                newNode['children'] = this.getUnknownAllChildrenNames(node);
            }
            //@ts-ignore
            newNode['detail'] = node['detail'];
            //@ts-ignore
            newNode['depth'] = depth;
            //@ts-ignore
            newNode['name'] = name;
            //@ts-ignore
            newNode['parentName'] = parentName;
            //@ts-ignore
            newNode['property'] = [];
            //@ts-ignore
            result.push(newNode);
            //@ts-ignore
            if (node.children) {
                //@ts-ignore
                result = result.concat(this.getFlattenTreeData(node.children, depth + 1, node['function_name']))
            }
        })
        return result
    }

    /**
     * 查找重复项
     * @param propertyData 
     * @returns 
     */
    removeDuplicates(propertyData: Array<unknown>): Array<unknown> {
        const result: Array<unknown> = [];
        propertyData.forEach(propertyGroup => {
            const groups: Array<unknown> = [];
            //@ts-ignore
            propertyGroup.forEach((property: unknown) => {
                //@ts-ignore
                const duplicateObj = groups.find(group => group['func_name'] === property['func_name']);
                if (duplicateObj) {
                    //@ts-ignore
                    duplicateObj['begin'] = Math.min(duplicateObj['begin'], property['begin']);
                    //@ts-ignore
                    duplicateObj['end'] = Math.max(duplicateObj['end'], property['end']);
                } else {
                    groups.push(property)
                }
            })
            result.push(groups);
        })
        return result
    }

    /**
     * 关系树赋值
     * @param relationData 
     * @param propertyData 
     */
    setRelationDataProperty(relationData: Array<unknown>, propertyData: Array<unknown>): Array<unknown> {
        const sampleProperty = relationData;
        //数组每一项进行比对
        propertyData.forEach(propertyGroup => {
            //@ts-ignore
            propertyGroup.forEach((property: unknown) => {
                //@ts-ignore
                const relation = sampleProperty.find(relation => relation['name'] === property['func_name']);
                //property属性存储每帧数据
                //@ts-ignore
                relation?.property.push({
                    //@ts-ignore
                    name: property['func_name'],
                    //@ts-ignore
                    detail: relation['detail'],
                    //@ts-ignore
                    end: property['end'],
                    //@ts-ignore
                    begin: property['begin'],
                    //@ts-ignore
                    depth: relation['depth'],
                    //@ts-ignore
                    instructions: property['instructions'],
                    //@ts-ignore
                    cycles: property['cycles']
                })
            })
        })

        //获取所有名字为unknown的数据
        //@ts-ignore
        const unknownRelation = sampleProperty.filter(relation => relation['name'].indexOf('unknown') > -1);
        //二维数组 用于存放unknown下所有子节点的数据
        let twoDimensionalArray: Array<unknown> = [];
        let result: Array<unknown> = [];
        unknownRelation.forEach(unknownItem => {
            result = [];
            twoDimensionalArray = [];
            //@ts-ignore
            const children = unknownItem['children'];
            //先获取到unknwon节点下每个子节点的property
            Object.keys(children).forEach(key => {
                //@ts-ignore
                unknownItem.children[key] = (sampleProperty.find(relation => relation['name'] === key)).property;
            })
            //将每个子节点的property加到二维数组中
            Object.values(children).forEach((value: unknown) => {
                //@ts-ignore
                if (value.length > 0) {
                    twoDimensionalArray.push(value)
                }
            })
            if (twoDimensionalArray.length > 0) {
                //取每列的最大值和最小值
                //@ts-ignore
                for (let i = 0; i < twoDimensionalArray[0].length; i++) {
                    const data = {
                        //@ts-ignore
                        name: unknownItem['name'],
                        //@ts-ignore
                        detail: unknownItem['detail'],
                        //@ts-ignore
                        begin: (twoDimensionalArray[0][i]).begin,
                        end: 0,
                        //@ts-ignore
                        depth: unknownItem['depth']
                    }
                    for (let j = 0; j < twoDimensionalArray.length; j++) {
                        //@ts-ignore
                        data['end'] = Math.max((twoDimensionalArray[j][i])['end'], data['end']);
                        //@ts-ignore
                        data['begin'] = Math.min((twoDimensionalArray[j][i])['begin'], data['begin']);
                    }
                    result.push(data);
                }
                //@ts-ignore
                unknownItem.property = result;
            }
        })
        return sampleProperty;
    }

    /**
     * 获取unknown节点下所有孩子节点的名称
     * @param node 
     * @param names 
     */
    getUnknownAllChildrenNames(node: unknown, names: unknown = {}): object {
        //@ts-ignore
        if (node['children']) {
            //@ts-ignore
            node['children'].forEach((child: unknown) => {
                //@ts-ignore
                if (child['function_name'].indexOf('unknown') < 0) {
                    //@ts-ignore
                    names[child['function_name']] = []
                } else {
                    this.getUnknownAllChildrenNames(child, names)
                }
            })
        }
        //@ts-ignore
        return names
    }
}