// A light summary of a .seq file for display (and to validate it parses before
// we store it). Built on the parser + reconstruction reused from seqlab.
import { parseSeq } from './parseSeq.ts'
import { reconstruct } from './reconstruct.ts'

export interface SeqSummary {
  ok: boolean
  error?: string
  name?: string
  version?: string
  numBlocks: number
  durationSec: number
  rfCount: number
  adcCount: number
  adcSamples: number
  signatureValid?: boolean
}

export function summarizeSeq(text: string): SeqSummary {
  try {
    const seq = parseSeq(text)
    const rec = reconstruct(seq)
    const nameDef = seq.definitions.get('Name')
    const name = typeof nameDef === 'string' ? nameDef : undefined
    return {
      ok: true,
      name,
      version: `${seq.version.major}.${seq.version.minor}.${seq.version.revision}`,
      numBlocks: seq.blocks.length,
      durationSec: rec.duration,
      rfCount: rec.stats.rfCount,
      adcCount: rec.stats.adcCount,
      adcSamples: rec.stats.adcSamples,
      signatureValid: seq.signature?.valid,
    }
  } catch (err) {
    return {
      ok: false,
      error: err instanceof Error ? err.message : String(err),
      numBlocks: 0,
      durationSec: 0,
      rfCount: 0,
      adcCount: 0,
      adcSamples: 0,
    }
  }
}