77 lines
2.2 KiB
Go
77 lines
2.2 KiB
Go
package readers
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import (
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"StoreBackEnd/pkg/protocol"
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"StoreBackEnd/pkg/protocol/repository"
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"StoreBackEnd/pkg/protocol/rules/writers"
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"StoreBackEnd/pkg/utils"
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"bufio"
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"strconv"
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)
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// SendFileRulePrefix Rule command prefix
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const SendFileRulePrefix = "ffe_sendfile"
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// SendFileRule Storage structure for the SendFileRule
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type SendFileRule struct {
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// cmd Rule name
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cmd string
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// matcher Allow to make a regex match
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matcher *protocol.RegexMatcher
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// protocolRepo Instance de ProtocolRepository
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protocolRepo *repository.ProtocolRepository
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}
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// CreateSendFileRule Creating an instance of SendFileRule
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func CreateSendFileRule(pattern string, protocolRepo *repository.ProtocolRepository) protocol.IProtocolReader {
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return &SendFileRule{
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cmd: SendFileRulePrefix,
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matcher: protocol.CreateRegexMatcher(pattern),
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protocolRepo: protocolRepo,
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}
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}
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// GetCmd retrieve the command name.
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func (rule SendFileRule) GetCmd() string {
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return rule.cmd
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}
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// Execute the Rule with a string command.
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func (rule SendFileRule) Execute(data string) (*protocol.ProtocolWriterResult, func(reader *bufio.Reader) *protocol.ProtocolWriterResult) {
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println(0)
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if rule.Match(data) { // TODO : cloture this command.
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println("OK")
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values := rule.matcher.Parse(data)
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// Values
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fileName := values[1]
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fileSize, _ := strconv.Atoi(values[2])
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// fileContentHash := values[3]
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println(1)
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// function callback
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callback := rule.onRead(fileName, fileSize)
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println(2)
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return rule.protocolRepo.ExecuteWriter(writers.SendOkRulePrefix), callback
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} else {
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return rule.protocolRepo.ExecuteWriter(writers.SendErrorRulePrefix), nil
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}
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}
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func (rule SendFileRule) onRead(fileName string, fileSize int) func(reader *bufio.Reader) *protocol.ProtocolWriterResult {
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return func(reader *bufio.Reader) *protocol.ProtocolWriterResult {
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hasReceive := utils.ReceiveFile(fileName, fileSize, reader)
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println(3)
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if !hasReceive {
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return rule.protocolRepo.ExecuteWriter(writers.SendErrorRulePrefix)
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} else {
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return rule.protocolRepo.ExecuteWriter(writers.SendOkRulePrefix)
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}
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}
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}
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// Match make a match with the current Rule and check if it matches.
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func (rule SendFileRule) Match(data string) bool {
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return rule.matcher.Match(data)
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}
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