orca/src/main/opencode/opencode-model-version-policy.ts

import { compareAppVersions } from '../../shared/app-version'
import { OPENCODE_NATIVE_PROMPT_VERSIONS } from '../../shared/opencode-cli-version'

// Real-CLI-verified floors, capped to their major: a new major may change the model route.
const LEGACY_FLAG_MODEL_FLOOR = '1.18.30'
const CONFIG_OVERLAY_MODEL_FLOOR = '2.0.14'
// Earlier 2.x submits --prompt before agent/model load and drops it (upstream #51938).
const NATIVE_PROMPT_SUBMIT_FLOOR = '2.0.19'

function isStableReleaseFrom(version: string | null | undefined, floor: string): boolean {
  const major = floor.split('.')[0]
  return (
    typeof version === 'string' &&
    /^\d+\.\d+\.\d+$/.test(version) &&
    version.split('.')[0] === major &&
    compareAppVersions(version, floor) >= 0
  )
}

export function isVerifiedOpenCodeLegacyModelVersion(version: string | null | undefined): boolean {
  return isStableReleaseFrom(version, LEGACY_FLAG_MODEL_FLOOR)
}

export function isVerifiedOpenCodeConfigModelVersion(version: string | null | undefined): boolean {
  return (
    isStableReleaseFrom(version, CONFIG_OVERLAY_MODEL_FLOOR) &&
    (isStableReleaseFrom(version, NATIVE_PROMPT_SUBMIT_FLOOR) ||
      OPENCODE_NATIVE_PROMPT_VERSIONS.some((supported) => supported === version))
  )
}