package llm

// adaptiveThinking records which models accept thinking: {"type":"adaptive"}.
// It is a per-model table for the same reason prices is: the answer differs by
// model and a wrong one is not a rounding error. claude-haiku-4-5 answers a
// request carrying adaptive thinking with
//
//	400 invalid_request_error: adaptive thinking is not supported on this model
//
// which kills the agent before its first turn — which is exactly what the
// explore subagent preset, pinned to haiku, did on every spawn.
//
// Only ids confirmed to accept adaptive thinking are listed. Absence is not a
// claim that the model rejects it, only that this build has not confirmed it.
var adaptiveThinking = map[string]bool{
	"claude-opus-5":   true,
	"claude-opus-4-8": true,
	"claude-opus-4-7": true,
	"claude-sonnet-5": true,
}

// SupportsAdaptiveThinking reports whether model accepts an adaptive thinking
// parameter. Callers omit the field entirely when it does not.
//
// An unlisted id — a gateway serving a model this build has never heard of, a
// family released after it — is treated as unsupported. The two mistakes are
// not symmetric: sending adaptive to a model that lacks it is a hard 400 that
// ends the run before any work happens, where omitting it on a model that would
// have taken it only costs the thinking. The recoverable failure is the one to
// default to. Flagships stay on the list, so the main session is unaffected.
//
// basePrice is the pricing table's normaliser, and the decoration it strips —
// a -YYYYMMDD or -latest suffix, a bracketed context-window variant — is the
// same decoration a capability lookup has to see past. /v1/models hands out
// claude-opus-5-20251101, and that is the same model as claude-opus-5.
func SupportsAdaptiveThinking(model string) bool {
	return adaptiveThinking[basePrice(model)]
}