/* 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 chartPanelFile = path.resolve(currentDir, '../components/SteadyTrendChartPanel.vue')
const trendOptionsFile = path.resolve(currentDir, '../utils/trendOptions.ts')

const chartPanelSource = fs.readFileSync(chartPanelFile, 'utf8')
const trendOptionsSource = fs.readFileSync(trendOptionsFile, 'utf8')

const checks = [
    ['chart panel defines missing data tool action', /'missing-data'/, chartPanelSource],
    ['chart panel labels missing data action', /action:\s*'missing-data'[\s\S]*label:/, chartPanelSource],
    [
        'chart panel defaults missing data enabled for every query',
        /const\s+missingDataEnabled\s*=\s*ref\(true\)/,
        chartPanelSource
    ],
    [
        'chart panel marks missing data action active only when enabled',
        /action\s*===\s*'missing-data'[\s\S]*return\s+missingDataEnabled\.value/,
        chartPanelSource
    ],
    [
        'chart panel passes missing data state into chart options',
        /buildSteadyTrendChartGroups\([^)]*trendXZoomRange\.value[\s\S]*showMissingData:\s*missingDataEnabled\.value/,
        chartPanelSource
    ],
    ['chart options accept missing data option', /showMissingData\?:\s*boolean/, trendOptionsSource],
    [
        'chart options only fills missing data when enabled',
        /chartOptions\.showMissingData\s*===\s*true\s*\?\s*fillSteadyTrendMissingPoints\(/,
        trendOptionsSource
    ],
    [
        'missing data filler inserts null values',
        /fillSteadyTrendMissingPoints[\s\S]*value:[\s\S]*:\s*null/,
        trendOptionsSource
    ],
    [
        'missing data filler infers interval from existing time gaps',
        /resolveSteadyTrendPointIntervalMs[\s\S]*gaps[\s\S]*Math\.min/,
        trendOptionsSource
    ]
]

const failed = checks.filter(([, pattern, source]) => !pattern.test(source)).map(([message]) => message)

if (failed.length) {
    console.error('steadyDataView missing data contract failed:')
    failed.forEach(message => console.error(`- ${message}`))
    process.exit(1)
}

console.log('steadyDataView missing data contract passed')