[j RdZddlmZddlZddlmZdd Zdd ZddZddZ ddZ dS)zFHelpers for reading the effective fallback provider chain from config.) annotationsN)Anyvaluerreturnstrc~t|tsdS|dS)N/) isinstancerstriprstrip)rs >  .%-Jz "z"""" Nrdict[str, Any]tuple[str, str, str]ct|dpdt|dpdt |dfSr!)rrr lowerr)rs r_entry_identityr/?s EIIj ! ! 'R((..006688 EIIg   $"%%++--3355UYYz223399;; rconfigc|pi}g}t}dD]e}t||D]@}t|}||vr||||Af|S)anReturn the effective fallback chain merged across old and new config keys. ``fallback_providers`` remains the primary source of truth and keeps its order. Legacy ``fallback_model`` entries are appended afterwards unless they target the same provider/model/base_url route as an earlier entry. The returned list always contains fresh dict copies. )fallback_providersfallback_model)setr*rr/addr&)r0chainseenkeyridentitys rget_fallback_chainr:Gs\rF"$E&)eeD7  +FJJsOO<<  E&u--H4 HHX    LL       Lr)rrrr)rrrr)rrrr)rr+rr,)r0rrr) __doc__ __future__rrtypingrrrr*r/r:rrr?sLL"""""" %%%% &:r