"#httpserver/base.spl" import
"#httpserver/static.spl" import
"#linkedlist.spl" import

use net:http:Server
1048576 net:http:server:=bufsize

construct Branch {
	name
	commit
	;
	construct { this | with name commit this ;
		name this:=name
		commit this:=commit
		this
	}
	json { json |
		properties props-to-json
	}
}

construct Branches {
	main
	release
	loader
	;
	construct { this | with dir this ;
		func read-commit { s | with file ;
			[ "unzip" "-p" file "commit" ] StreamTypes:cmd:create:read-to-end<32>:to-str
		}
		"Loader" 	dir "/BaseBand-Loader.jar" concat read-commit 	Branch:new this:=loader
		"Broadway" 	dir "/BaseBand-release.jar" concat read-commit 	Branch:new this:=release
		"Iceland" 	dir "/BaseBand-main.jar" concat read-commit 	Branch:new this:=main
		this
	}
	json { json |
		properties props-to-json
	}
}

construct Event {
	event-kind
	data
	;
	construct { this | with kind data this ;
		kind this:=event-kind
		data this:=data
		this
	}
	json { json |
		properties props-to-json
	}
}

construct Object404 {
	error
	;
	construct { this | with this ;
		"Endpoint not found" this:=error
		this
	}
	json { json |
		properties props-to-json
	}
}

construct Refreshed {
	ok
	;
	construct { this | with this ;
		"true" this:=ok
		this
	}
	json { json |
		properties props-to-json
	}
}

func props-to-json { | with props ;
	props:last:get<1> dup null eq not if {
		"\"" swap _str :replace<"\\" "\\\\">:replace<"\"" "\\\""> concat "\"" concat 2 stop
	} pop
	"{" 
	props
		:iter
		:filter<{ b | :to-stack pop with key ; key ":" eq not key ";" eq not and }>
		:map<{ s | 
			:to-stack with key value ; 
			"\"" 
				key :replace<"\\" "\\\\">:replace<"\"" "\\\""> concat 
				"\": " concat 
				value properties props-to-json concat 
		}>
		:join<", "> concat 
	"}" concat
}

func main { exitcode | with args ;
	def server Server:new<"::0" 40002> =server
	while { 1 } {
		server:accept &handle-client fork;
	}
}

def clients LinkedList:new =clients

func dir { | with client dir location ;
	dir "/BaseBand-release.jar" concat location "/download/client/release" concat client:serve-file-cached;<"application/octet-stream">
	dir "/BaseBand-main.jar" concat    location "/download/client/main" concat    client:serve-file-cached;<"application/octet-stream">
	dir "/BaseBand-Loader.jar" concat  location "/download/loader" concat         client:serve-file-cached;<"application/octet-stream">

	location "/branches" concat client:path eq if {
		dir Branches:new:json client:write-ok:write-content-type<"application/json">:write-str-body:finish;
	}

	"/refresh" client:path eq if {
		def event "refresh:" location concat dir Branches:new Event:new:json =event
		def new-clients LinkedList:new =new-clients
		clients:foreach<{ | with client ;
			catch IO {
				event "\n" concat :to-bytes client:write-exact;
				client new-clients:push-front;
			} { pop }
		}>
	}
}

func handle-client { | with client ;
	client:read;
	client:path:ends-with<".jar"> if {
		def path client:path :to-bytes =path
		path:sub<0 path:len 4 -> :to-str client:=path
	}
	
	
	"/refresh" client:path eq if {
		client:server:cached-files if {
			client:server:cached-files:clear;
		}
	}

	"index.html" "/" client:serve-html-cached;

	client "rewrite" "/1.12.2" dir
	client "ednieva" "/ednieva" dir

	"/listen" client:path eq if {
		client
			:write-ok
			:write-content-type<"application/x-baseband-events">
			:writeln<"">
				dup:=wrote-body;<1>
			:writeln<"init" null Event:new:json>
			:stream
				dup:flush;
			clients:push-front;
	}

	"/refresh" client:path eq if {
		Refreshed:new:json client:write-ok:write-content-type<"application/json">:write-str-body:finish;
	}

	client:is-open if {
		Object404:new:json client:write-head<404 "Not Found">:write-content-type<"application/json">:write-str-body:finish;
	}
}