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;; This routine creates the db if not already present. It is only called if the db is not already opened
;;
(define (db:open-db dbstruct #!key (areapath #f)) ;; TODO: actually use areapath
(let ((tmpdb-stack (dbr:dbstruct-dbstack dbstruct))) ;; RA => Returns the first reference in dbstruct
(if (stack? tmpdb-stack)
(db:get-db tmpdb-stack) ;; get previously opened db (will create new db handle if all in the stack are already used
(let* ((dbpath (db:dbfile-path)) ;; 0))
(let* ((dbpath (db:dbfile-path )) ;; 0))
(dbexists (file-exists? dbpath))
(dbfexists (file-exists? (conc dbpath "/megatest.db")))
(tmpdb (db:open-megatest-db path: dbpath)) ;; lock-create-open dbpath db:initialize-main-db))
(mtdb (db:open-megatest-db))
(refndb (db:open-megatest-db path: dbpath name: "megatest_ref.db"))
(write-access (file-write-access? dbpath)))
(BB> "db:open-db>> dbpath="dbpath" dbexists="dbexists" and write-access="write-access)
(if (and dbexists (not write-access))
(begin (set! *db-write-access* #f)
(dbr:dbstruct-readonly-set! dbstruct #t)))
(dbr:dbstruct-read-only-set! dbstruct #t)))
(dbr:dbstruct-mtdb-set! dbstruct mtdb)
(dbr:dbstruct-tmpdb-set! dbstruct tmpdb)
(dbr:dbstruct-dbstack-set! dbstruct (make-stack)) ;; BB: why a stack? Why would the number of db's be indeterminate? Is this a legacy of 1.db 2.db .. ?
(stack-push! (dbr:dbstruct-dbstack dbstruct) tmpdb) ;; olddb is already a (cons db path)
(dbr:dbstruct-refndb-set! dbstruct refndb)
;; (mutex-unlock! *rundb-mutex*)
(if (and (not dbfexists)
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(cond
(*dbstruct-db* *dbstruct-db*);; TODO: when multiple areas are supported, this optimization will be a hazard
(else ;;(common:on-homehost?)
(let* ((dbstruct (make-dbr:dbstruct)))
(when (not *toppath*) (launch:setup areapath: areapath))
(db:open-db dbstruct areapath: areapath)
(set! *dbstruct-db* dbstruct)
(BB> "new dbstruct = "(dbr:dbstruct->alist dbstruct))
dbstruct))))
;; (else
;; (debug:print 0 *default-log-port* "ERROR: attempt to open database when not on homehost. Exiting. Homehost: " (common:get-homehost))
;; (exit 1))))
;; Open the classic megatest.db file (defaults to open in toppath)
;;
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