#!/bin/sh

set -e

# usage: config <global config> <stuff for localhost>
# generates a configuration file reg.conf
config() {
	cat <<EOF > reg.conf
daemon off
ipv6 off
port 10965
$1
server "localhost" {
	cert "cert.pem"
	key  "key.pem"
	root "testdata"
	$2
}
EOF
}

checkconf() {
	./../gmid -n -c reg.conf
}

# usage: get <path>
# return the body of the request on stdout
get() {
	(./gg.py "$1" 10965 | sed 1d) || true
}

# usage: head <path>
# return the meta response line on stdout
head() {
	(./gg.py "$1" 10965 | sed 1q) || true
}

run() {
	# filter out logs for GET requests
	(./../gmid -c reg.conf 2>&1 | grep -v GET) >&2 &
	pid=$!
}

# usage: check [exit-message]
# check if gmid is still running
check() {
	if ! ps $pid >/dev/null; then
		echo ${1:-"gmid crashed?"}
		exit 1
	fi
}

# quit gmid
quit() {
	pkill gmid || true
	wait || true
}

# usage: eq a b errmsg
# if a and b aren't equal strings, exit with errmsg
eq() {
	if ! [ "$1" = "$2" ]; then
		echo "$3: \"$1\" not equal \"$2\""
		exit 1
	fi
}

onexit() {
	rm -f bigfile bigfile.sha
	quit
}

# tests

trap 'onexit' INT TERM EXIT

endl=`printf "\r\n"`
lf=`echo`

config "" ""
checkconf
run

eq "$(head /)"		"20 text/gemini"	"Unexpected head for /"
eq "$(get /)"		"# hello world$ln"	"Unexpected body for /"
echo OK GET /

eq "$(head /foo)"	"51 not found"		"Unexpected head /foo"
eq "$(get /foo)"	""			"Unexpected body /foo"
echo OK GET /foo

# should redirect if asked for a directory but without the trailing /
eq "$(head /dir)"	"30 /dir/"		"Unexpected redirect for /dir"
eq "$(get  /dir)"	""			"Unexpected body for redirect"
echo OK GET /dir

# 51 for a directory without index.gmi
eq "$(head /dir/)"	"51 not found"		"Unexpected head for /"
eq "$(get  /dir/)"	""			"Unexpected body for error"
echo OK GET /dir/

eq "$(head /dir/foo.gmi)" "20 text/gemini"	"Unexpected head for /dir/foo.gmi"
eq "$(get  /dir/foo.gmi)" "# hello world$ln"	"Unexpected body for /dir/foo.gmi"
echo OK GET /dir/foo.gmi

# try a big file
eq "$(head /bigfile)"	"20 application/octet-stream" "Unexpected head for /bigfile"
get /bigfile > bigfile
./sha bigfile bigfile.sha
eq "$(cat bigfile.sha)"	"$(cat testdata/bigfile.sha)" "Unexpected sha for /bigfile"
echo OK GET /bigfile

# shouldn't be executing cgi scripts
eq "$(head /hello)"	"20 application/octet-stream" "Unexpected head for /hello"
echo OK GET /hello

check "should be running"
quit

# try with custom mime
config 'mime "text/x-funny-text" "gmi"' 'default type "application/x-trash"'
checkconf
run

eq "$(head /)"		"20 text/x-funny-text"		"Unexpected head for /"
echo OK GET / with custom mime

eq "$(head /hello)"	"20 application/x-trash"	"Unexpected head for /hello"
echo OK GET /hello with custom mime

check "should be running"
quit

# try with custom lang
config '' 'lang "it"'
checkconf
run

eq "$(head /)"		"20 text/gemini; lang=it"	"Unexpected head for /"
echo OK GET / with custom lang

check "should be running"
quit

# finally try with CGI scripts
config '' 'cgi ""'
checkconf
run

eq "$(head /hello)"	"20 text/gemini"		"Unexpected head for /hello"
eq "$(get  /hello)"	"# hello world$ln"		"Unexpected body for /hello"
echo OK GET /hello with cgi

eq "$(head /slow)"	"20 text/gemini"		"Unexpected head for /slow"
eq "$(get  /slow)"	"# hello world$ln"		"Unexpected body for /slow"
echo OK GET /slow with cgi

eq "$(head /err)"	""		"Unexpected head for /err"
eq "$(get  /err)"	""		"Unexpected body for /err"
echo OK GET /err with cgi

eq "$(head /invalid | wc -c | xargs)" 2049		"Unexpected body for /invalid"
eq "$(get /invalid)"		""			"Unexpected body for /invalid"
echo OK GET /invalid with cgi

check "should be running"
quit