/* eslint-env node */
import fs from 'node:fs'
import path from 'node:path'
import { fileURLToPath } from 'node:url'

const currentDir = path.dirname(fileURLToPath(import.meta.url))
const viewDir = path.join(currentDir, '..')
const read = file => fs.readFileSync(path.join(viewDir, file), 'utf8')

const toolbarSource = read('components/SteadyTrendToolbar.vue')
const chartPanelSource = read('components/SteadyTrendChartPanel.vue')
const trendPayloadSource = read('utils/trendPayload.ts')
const trendOptionsSource = read('utils/trendOptions.ts')
const selectionRulesSource = read('utils/selectionRules.ts')
const sharedPhaseColorSource = fs.readFileSync(path.join(viewDir, '..', '..', '..', 'utils', 'phaseColors.ts'), 'utf8')
const sharedStyleSource = fs.readFileSync(path.join(viewDir, '..', '..', '..', 'styles', 'var.scss'), 'utf8')

const expectations = [
    [
        'toolbar uses a single active stat type',
        /:model-value="modelValue\.statType"[\s\S]*@update:model-value="updateField\('statType', \$event\)/,
        toolbarSource
    ],
    [
        'toolbar no longer allows multiple stat types in one query',
        /<el-select(?![\s\S]*multiple[\s\S]*placeholder="[^"]*统计类型")[\s\S]*placeholder="[^"]*统计类型"/,
        toolbarSource
    ],
    [
        'trend payload keeps API statTypes array but only sends active stat',
        /statTypes:\s*\[formState\.statType\]/,
        trendPayloadSource
    ],
    [
        'selection rules cap monitoring points at six',
        /MAX_SELECTED_LINE_COUNT\s*=\s*6[\s\S]*lineIds\.length\s*>\s*MAX_SELECTED_LINE_COUNT/,
        selectionRulesSource
    ],
    [
        'selection rules cap indicators at six',
        /MAX_SELECTED_INDICATOR_COUNT\s*=\s*6[\s\S]*indicators\.length\s*>\s*MAX_SELECTED_INDICATOR_COUNT/,
        selectionRulesSource
    ],
    [
        'chart panel renders a list of grouped charts',
        /v-for="group in chartGroups"[\s\S]*:options="group\.options"/,
        chartPanelSource
    ],
    [
        'chart panel syncs grouped charts through LineChart group and dataZoom events',
        /<LineChart[\s\S]*:options="group\.options"[\s\S]*:group="group\.group"[\s\S]*@chart-data-zoom="handleChartDataZoom"/,
        chartPanelSource
    ],
    [
        'chart panel only shows trend point count without bucket prefix',
        /trendResult\.displayPointCount\s*\|\|\s*0[\s\S]*点/,
        chartPanelSource
    ],
    [
        'chart panel does not render bucket slash prefix before point count',
        /^(?![\s\S]*trendResult\.bucket[\s\S]*\/[\s\S]*trendResult\.displayPointCount)[\s\S]*$/,
        chartPanelSource
    ],
    [
        'chart panel renders waveform-style trend tool groups',
        /trend-tool-groups[\s\S]*trendToolGroups[\s\S]*handleTrendToolAction/,
        chartPanelSource
    ],
    [
        'chart panel keeps trend toolbar next to point count on the left',
        /\.panel-header\s*\{[\s\S]*justify-content:\s*flex-start/,
        chartPanelSource
    ],
    [
        'chart panel exposes core trend toolbar actions except marker and data export',
        /x-zoom-in[\s\S]*x-zoom-out[\s\S]*y-zoom-in[\s\S]*y-zoom-out[\s\S]*box-zoom[\s\S]*reset[\s\S]*pan[\s\S]*fullscreen[\s\S]*download-image/,
        chartPanelSource
    ],
    [
        'chart panel exposes a wheel zoom toggle action',
        /wheel-zoom/,
        chartPanelSource
    ],
    [
        'chart panel defaults wheel zoom disabled',
        /const\s+wheelZoomEnabled\s*=\s*ref\(false\)/,
        chartPanelSource
    ],
    [
        'chart panel passes wheel zoom state into grouped options',
        /buildSteadyTrendChartGroups\([^)]*trendXZoomRange\.value[\s\S]*wheelZoomEnabled:\s*wheelZoomEnabled\.value/,
        chartPanelSource
    ],
    [
        'chart panel defaults to first tenth of the x range',
        /DEFAULT_STEADY_TREND_X_ZOOM_RANGE\s*:\s*SteadyTrendZoomRange\s*=\s*\{\s*start:\s*0,\s*end:\s*10\s*\}/,
        chartPanelSource
    ],
    [
        'chart panel stores shared x zoom range from the default range',
        /const trendXZoomRange\s*=\s*ref<SteadyTrendZoomRange>\(\{\s*\.\.\.DEFAULT_STEADY_TREND_X_ZOOM_RANGE\s*\}\)/,
        chartPanelSource
    ],
    [
        'chart panel compares reset state against the default x zoom range',
        /const isDefaultTrendXZoomRange[\s\S]*DEFAULT_STEADY_TREND_X_ZOOM_RANGE[\s\S]*const canResetTrendChart[\s\S]*!isDefaultTrendXZoomRange\.value/,
        chartPanelSource
    ],
    [
        'chart panel stores y zoom scale and active chart tool',
        /const trendYZoomScale\s*=\s*ref\(1\)[\s\S]*const activeTrendInteractionMode\s*=\s*ref<SteadyTrendInteractionMode>\('none'\)/,
        chartPanelSource
    ],
    [
        'chart panel passes active chart tool and y zoom scale into grouped options',
        /buildSteadyTrendChartGroups\([^)]*trendXZoomRange\.value[\s\S]*activeTool:\s*activeTrendInteractionMode\.value[\s\S]*yZoomScale:\s*trendYZoomScale\.value/,
        chartPanelSource
    ],
    [
        'chart panel resets x zoom range to the default first tenth when trend result changes',
        /const\s+resetTrendToolState\s*=\s*\(\)\s*=>\s*\{[\s\S]*trendXZoomRange\.value\s*=\s*\{\s*\.\.\.DEFAULT_STEADY_TREND_X_ZOOM_RANGE\s*\}[\s\S]*watch\(\s*\(\)\s*=>\s*props\.trendResult[\s\S]*resetTrendToolState\(\)/,
        chartPanelSource
    ],
    [
        'chart panel resets toolbar state when trend result changes',
        /watch\(\s*\(\)\s*=>\s*props\.trendResult[\s\S]*resetTrendToolState\(\)/,
        chartPanelSource
    ],
    [
        'chart panel can export the visible trend charts as an image',
        /steady-trend-export-target[\s\S]*html2canvas[\s\S]*downloadSteadyTrendImage/,
        chartPanelSource
    ],
    ['chart utilities expose grouped chart options', /export const buildSteadyTrendChartGroups/, trendOptionsSource],
    [
        'chart utilities carry one shared ECharts group for steady multi-chart sync',
        /group:\s*STEADY_TREND_CHART_GROUP/,
        trendOptionsSource
    ],
    [
        'chart utilities accept shared x zoom range when building options',
        /buildSteadyTrendChartOptions\s*=\s*\([^)]*zoomRange:\s*SteadyTrendZoomRange/,
        trendOptionsSource
    ],
    [
        'chart utilities accept active tool and y zoom options',
        /interface\s+SteadyTrendChartBuildOptions[\s\S]*activeTool\?:[\s\S]*yZoomScale\?:/,
        trendOptionsSource
    ],
    [
        'chart options expose activeTool for LineChart interactions',
        /activeTool:\s*chartOptions\.activeTool\s*\|\|\s*'none'/,
        trendOptionsSource
    ],
    [
        'chart options apply y zoom scale to steady y axis',
        /applySteadyYAxisZoom\([\s\S]*buildSteadyTrendAxisConfig\(values,\s*unit\)[\s\S]*chartOptions\.yZoomScale/,
        trendOptionsSource
    ],
    [
        'chart options bind dataZoom to shared x zoom range',
        /dataZoom:\s*\[[\s\S]*start:\s*zoomRange\.start[\s\S]*end:\s*zoomRange\.end/,
        trendOptionsSource
    ],
    [
        'chart options accept wheel zoom option',
        /interface\s+SteadyTrendChartBuildOptions[\s\S]*wheelZoomEnabled\?:\s*boolean/,
        trendOptionsSource
    ],
    [
        'chart options only zoom on mouse wheel when enabled',
        /zoomOnMouseWheel:\s*chartOptions\.wheelZoomEnabled\s*===\s*true[\s\S]*moveOnMouseWheel:\s*false/,
        trendOptionsSource
    ],
    [
        'chart options keep hover axis pointer as a vertical line',
        /tooltip:\s*\{[\s\S]*axisPointer:\s*\{[\s\S]*type:\s*'line'/,
        trendOptionsSource
    ],
    [
        'chart options calculate visible point count from shared zoom range',
        /resolveSteadyTrendVisiblePointCount[\s\S]*zoomRange\.end\s*-\s*zoomRange\.start[\s\S]*Math\.ceil/,
        trendOptionsSource
    ],
    [
        'chart series line width uses visible point count after x zoom',
        /width:\s*resolveSteadyTrendLineWidth\(\s*resolveSteadyTrendVisiblePointCount\(series\.points\?\.length\s*\|\|\s*0,\s*zoomRange\)\s*\)/,
        trendOptionsSource
    ],
    [
        'chart grouping splits by indicator for one monitoring point',
        /lineIds\.length\s*===\s*1[\s\S]*indicatorCodes\.length\s*>\s*1[\s\S]*'indicator'/,
        trendOptionsSource
    ],
    [
        'chart grouping splits by monitoring point for one indicator',
        /lineIds\.length\s*>\s*1[\s\S]*indicatorCodes\.length\s*===\s*1[\s\S]*'line'/,
        trendOptionsSource
    ],
    [
        'chart options keep fixed left grid for multi-chart alignment',
        /left:\s*STEADY_TREND_GRID_LEFT[\s\S]*containLabel:\s*false/,
        trendOptionsSource
    ],
    [
        'chart options use compact top grid to reduce title legend height',
        /STEADY_TREND_GRID_TOP\s*=\s*28[\s\S]*top:\s*STEADY_TREND_GRID_TOP/,
        trendOptionsSource
    ],
    [
        'chart panel does not render external chart title rows',
        /^(?![\s\S]*<div class="chart-title">)[\s\S]*$/,
        chartPanelSource
    ],
    [
        'chart options render centered group title through ECharts title',
        /title:\s*\{[\s\S]*text:\s*chartTitle[\s\S]*left:\s*'center'[\s\S]*top:\s*0/,
        trendOptionsSource
    ],
    [
        'chart grouping passes resolved title into ECharts options',
        /const\s+groupTitle\s*=\s*resolveGroupTitle\(groupSeries\)[\s\S]*buildSteadyTrendChartOptions\(groupSeries,\s*zoomRange,\s*isLastChart,\s*chartOptions,\s*groupTitle\)/,
        trendOptionsSource
    ],
    [
        'chart options explicitly show min and max y labels',
        /showMinLabel:\s*true[\s\S]*showMaxLabel:\s*true/,
        trendOptionsSource
    ],
    [
        'chart y axis keeps waveform unit placement style without changing unit content',
        /nameLocation:\s*'middle'[\s\S]*nameGap:\s*42[\s\S]*nameTextStyle:/,
        trendOptionsSource
    ],
    [
        'chart x axis only keeps first and last labels like waveform',
        /buildSteadyTimeAxisLabelFormatter[\s\S]*index\s*!==\s*0\s*&&\s*index\s*!==\s*lastIndex[\s\S]*return\s*''/,
        trendOptionsSource
    ],
    [
        'chart x axis label layout follows waveform except unit display',
        /axisLabel:\s*\{[\s\S]*hideOverlap:\s*false[\s\S]*interval:\s*0[\s\S]*margin:\s*showTimeAxis\s*\?\s*10\s*:\s*0[\s\S]*formatter:\s*buildSteadyTimeAxisLabelFormatter\(timeLabels\)/,
        trendOptionsSource
    ],
    [
        'chart options allow hiding the x axis for non-final grouped charts',
        /buildSteadyTrendChartOptions\s*=\s*\([^)]*showTimeAxis\s*=\s*true/,
        trendOptionsSource
    ],
    [
        'chart x axis keeps labels visible but hides baseline and dense ticks',
        /axisLine:\s*\{[\s\S]*show:\s*false[\s\S]*axisLabel:\s*\{[\s\S]*show:\s*showTimeAxis[\s\S]*axisTick:\s*\{[\s\S]*show:\s*false/,
        trendOptionsSource
    ],
    [
        'chart grouping only shows the x axis on the final grouped chart',
        /const\s+groupEntries\s*=\s*Array\.from\(groupMap\.entries\(\)\)[\s\S]*const\s+isLastChart\s*=\s*index\s*===\s*groupEntries\.length\s*-\s*1[\s\S]*buildSteadyTrendChartOptions\(groupSeries,\s*zoomRange,\s*isLastChart,\s*chartOptions,\s*groupTitle\)/,
        trendOptionsSource
    ],
    [
        'chart options use waveform line width buckets including the final three widths',
        /resolveSteadyTrendLineWidth[\s\S]*200000\)\s*return\s*0\.35[\s\S]*100000\)\s*return\s*0\.45[\s\S]*50000\)\s*return\s*0\.55[\s\S]*20000\)\s*return\s*0\.65[\s\S]*10000\)\s*return\s*0\.75[\s\S]*5000\)\s*return\s*0\.9[\s\S]*2000\)\s*return\s*1[\s\S]*800\)\s*return\s*1\.1[\s\S]*200\)\s*return\s*1\.2[\s\S]*return\s*STEADY_TREND_LINE_MAX_WIDTH/,
        trendOptionsSource
    ],
    ['chart options read phase colors from shared theme utility', /resolvePhaseThemeColor/, trendOptionsSource],
    [
        'chart legend only uses phase name',
        /const formatSeriesName[\s\S]*return series\.phase \|\| series\.seriesKey/,
        trendOptionsSource
    ],
    [
        'chart group title joins monitoring point and indicator with underscore',
        /\[firstSeries\.lineName[\s\S]*firstSeries\.indicatorName[\s\S]*\][\s\S]*\.filter\(Boolean\)[\s\S]*\.join\('_'\)/,
        trendOptionsSource
    ],
    [
        'steady y-axis above-one upper padding uses 1.05',
        /STEADY_AXIS_EXPAND_RATIO_ABOVE_ONE\s*=\s*1\.05/,
        trendOptionsSource
    ],
    [
        'steady y-axis above-one lower padding uses 0.95',
        /STEADY_AXIS_SHRINK_RATIO_ABOVE_ONE\s*=\s*0\.95/,
        trendOptionsSource
    ],
    [
        'steady y-axis compact padding uses 1.015 for narrow above-one ranges',
        /STEADY_AXIS_COMPACT_EXPAND_RATIO\s*=\s*1\.015/,
        trendOptionsSource
    ],
    [
        'steady y-axis compact padding uses 0.985 for narrow above-one ranges',
        /STEADY_AXIS_COMPACT_SHRINK_RATIO\s*=\s*0\.985/,
        trendOptionsSource
    ],
    [
        'steady y-axis compact split penalty stays low',
        /STEADY_AXIS_COMPACT_EXTRA_SPLIT_SCORE\s*=\s*0\.05/,
        trendOptionsSource
    ],
    [
        'steady y-axis enables compact readable range for narrow above-one data',
        /shouldUseCompactReadableAxisRange[\s\S]*maxAbs\s*>\s*1[\s\S]*STEADY_AXIS_COMPACT_RANGE_RATIO/,
        trendOptionsSource
    ],
    ['shared phase colors read the global T phase theme variable', /T:\s*'--cn-color-phase-t'/, sharedPhaseColorSource],
    ['shared phase colors keep T phase black fallback', /T:\s*'#000000'/, sharedPhaseColorSource],
    ['shared phase colors map AB line voltage to phase A color', /AB:\s*'--cn-color-phase-ab'/, sharedPhaseColorSource],
    ['shared phase colors map BC line voltage to phase B color', /BC:\s*'--cn-color-phase-bc'/, sharedPhaseColorSource],
    ['shared phase colors map CA line voltage to phase C color', /CA:\s*'--cn-color-phase-ca'/, sharedPhaseColorSource],
    ['shared phase colors keep AB fallback aligned with phase A', /AB:\s*'#daa520'/, sharedPhaseColorSource],
    ['shared phase colors keep BC fallback aligned with phase B', /BC:\s*'#2e8b57'/, sharedPhaseColorSource],
    ['shared phase colors keep CA fallback aligned with phase C', /CA:\s*'#a52a2a'/, sharedPhaseColorSource],
    ['global style defines AB line voltage color variable', /--cn-color-phase-ab:\s*#daa520/, sharedStyleSource],
    ['global style defines BC line voltage color variable', /--cn-color-phase-bc:\s*#2e8b57/, sharedStyleSource],
    ['global style defines CA line voltage color variable', /--cn-color-phase-ca:\s*#a52a2a/, sharedStyleSource]
]

const failures = expectations.filter(([, pattern, source]) => !pattern.test(source))

if (failures.length) {
    console.error('steadyDataView chart display contract failed:')
    for (const [name] of failures) {
        console.error(`- ${name}`)
    }
    process.exit(1)
}

console.log('steadyDataView chart display contract passed')