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;;======================================================================
;;======================================================================
;; A hash of hashes that can be kept in sync by sending minial deltas
;;======================================================================
(use format)
(use srfi-1 srfi-69)
(use srfi-1 srfi-69 sqlite3)
(import (prefix sqlite3 sqlite3:))
(declare (unit synchash))
(declare (uses db))
(declare (uses server))
(include "db_records.scm")
(define (synchash:make)
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;; (cdb:remote-run db:get-keys #f)
;; (cdb:remote-run db:get-num-runs #f "%")
;; (cdb:remote-run db:get-runs #f runnamepatt numruns *start-run-offset* keypatts)
;;
;; keynum => the field to use as the unique key (usually 0 but can be other field)
;;
(define (synchash:client-get proc synckey keynum synchash . params)
(let* ((data (apply cdb:remote-run synchash:server-get #f proc synckey keynum params))
(let* ((data ;; (apply cdb:remote-run synchash:server-get #f proc synckey keynum params))
(apply synchash:server-get #f proc synckey keynum params))
(newdat (car data))
(removs (cadr data))
(myhash (hash-table-ref/default synchash synckey #f)))
(if (not myhash)
(begin
(set! myhash (make-hash-table))
(hash-table-set! synchash synckey myhash)))
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removs)
;; WHICH ONE!?
;; data)) ;; return the changed and deleted list
(list newdat removs))) ;; synchash))
(define *synchashes* (make-hash-table))
(define (synchash:server-get db proc synckey keynum . params)
(define (synchash:server-get indb proc synckey keynum . params)
;; (debug:print-info 2 "synckey: " synckey ", keynum: " keynum ", params: " params)
(let* ((db (if indb indb (db:open-megatest-db)))
(let* ((synchash (hash-table-ref/default *synchashes* synckey #f))
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;; (debug:print-info 2 "header: " header ", data: " data)
(cons (list "header" header) ;; add the header keyed by the word "header"
(map make-indexed data)))) ;; add each element keyed by the keynum'th val
(else
;; (debug:print-info 2 "Non-get runs call")
(map make-indexed newdat))))
;; (debug:print-info 2 "postdat: " postdat)
(if (not indb)(sqlite3:finalize! db))
(if (not synchash)
(begin
(set! synchash (make-hash-table))
(hash-table-set! *synchashes* synckey synchash)))
(synchash:get-delta postdat synchash)))
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