}

proc ::nano::account::addPending {account blockHash amount} {
	set accountPubKey [::nano::address::toPublicKey $account -hex]

	dict set ::nano::account::pending $accountPubKey $blockHash amount $amount
}

proc ::nano::account::getPending {account args} {
	set accountPubKey [::nano::address::toPublicKey $account -hex]

	set retval [dict create]
	catch {
		set retval [dict get $::nano::account::pending $accountPubKey {*}$args]
	}

	return $retval
}

proc ::nano::account::clearPending {account args} {
	set accountPubKey [::nano::address::toPublicKey $account -hex]

	catch {
		dict unset ::nano::account::pending $accountPubKey {*}$args
	}

	return
}

proc ::nano::account::receive {account blockHash signKey} {
	set accountPubKey [::nano::address::toPublicKey $account -hex]

	set frontierInfo [getFrontier $account]
	dict with frontierInfo {}

	set blockInfo [dict get $::nano::account::pending $accountPubKey $blockHash]
	set blockInfo [getPending $account $blockHash]

	set amount [dict get $blockInfo amount]
	set blockArgs [list to $account previousBalance $balance \
	                    amount $amount sourceBlock $blockHash \
	                    signKey $signKey representative $representative]

	if {[info exists frontierHash]} {
		lappend blockArgs previous $frontierHash
	}

	dict set blockArgs -json true

	set block [::nano::block::create::receive {*}$blockArgs]

	set newFrontierHash [dict get [json::json2dict $block] "_blockHash"]
	set balance [expr {$balance + $amount}]

	setFrontier $account $newFrontierHash $balance $representative
	dict unset ::nano::account::pending $accountPubKey $blockHash
	clearPending $account $blockHash

	return $block
}

proc ::nano::account::send {fromAccount toAccount amount signKey} {
	set fromAccountPubKey [::nano::address::toPublicKey $fromAccount -hex]
	set toAccountPubKey   [::nano::address::toPublicKey $fromAccount -hex]

proc ::nano::account::receiveAllPending {key {accountPubKey ""}} {
	set outBlocks [list]

	if {$accountPubKey eq ""} {
		set accountPubKey [::nano::key::publicKeyFromPrivateKey $key -hex]
	}

	set account [::nano::address::fromPublicKey $accountPubKey]
	if {![dict exists $::nano::account::pending $accountPubKey]} {

	set pendingBlocks [getPending $account]
	if {[llength $pendingBlocks] == 0} {
		return $outBlocks
	}

	set signKey [binary encode hex $key]
	set account [::nano::address::fromPublicKey $accountPubKey]

	foreach blockHash [dict keys [dict get $::nano::account::pending $accountPubKey]] {
	foreach blockHash [dict keys $pendingBlocks] {
		lappend outBlocks [receive $account $blockHash $signKey]
	}

	return $outBlocks
}

proc ::nano::account::setRepresentative {account representative signKey} {
	set accountPubKey [::nano::address::toPublicKey $account -hex]

	set frontierInfo [getFrontier $account]
	dict with frontierInfo {}

	set blockArgs [list account $account \
	                    representative $representative \
	                    signKey $signKey \
	                    previous $frontierHash \
	]
	dict set blockArgs -json true

	set block [::nano::block::create::setRepresentative {*}$blockArgs]

	set newFrontierHash [dict get [json::json2dict $block] "_blockHash"]

	setFrontier $account $newFrontierHash $balance $representative

	return $block
}