#!/usr/bin/perl

use strict;
use FindBin qw($Bin);
use Getopt::Long;
require "$Bin/misc/devlib.pl";

sub usage {
    die "Usage: dev-server [--wipe] [--mongo|--mysql|--postgres] [--tls] <portnumber> -- [other_blobserver_opts]";
}

my $closure_rev = "r2322";
my $closure_svn = "http://closure-library.googlecode.com/svn/trunk/";

chdir $Bin or die;

my $opt_KBps = 150; # if non-zero, kBps to throttle connections
my $opt_latency_ms = 90; # added latency in millisecond
my $opt_fast; # shortcut to disable throttling

my $opt_all;  # listen on all interfaces
my $opt_nobuild;
my $opt_offline;   # don't use the network ("airplane mode")
my $opt_staticres; # use static resources, not those on disk
my $opt_tls;
my $opt_wipe;

# keep indexes in memory only. often used with --wipe, but not
# necessarily. if --wipe isn't used, all blobs are re-indexed
# on start-up.
my $opt_memory;
my $opt_mongo;
my $opt_postgres;
my $opt_mysql;
GetOptions("wipe" => \$opt_wipe,
           "tls" => \$opt_tls,
           "all" => \$opt_all,
           "nobuild" => \$opt_nobuild,
           "memory" => \$opt_memory,
           "mongo" => \$opt_mongo,
           "postgres" => \$opt_postgres,
           "mysql" => \$opt_mysql,
           "staticres" => \$opt_staticres,
           "offline" => \$opt_offline,
           "KBps=i" => \$opt_KBps,
           "latency_ms=i" => \$opt_latency_ms,
           "fast" => \$opt_fast,
    )
    or usage();

$opt_memory = 1 unless $opt_memory || $opt_mongo || $opt_postgres || $opt_mysql;

my $port = shift;
$port = "3179" unless defined($port);
usage() unless $port =~ /^\d+$/;

unless ($ENV{GOPATH}) {
    warn "WARNING: Your GOPATH isn't set; attempting workaround, but you should really set a GOPATH. See https://plus.google.com/106356964679457436995/posts/ftJaqe9sbS2 and make your working directory be \$GOPATH/src/camlistore.org for best results.\n";
    $ENV{GOPATH} = "$Bin/gopath"
}

unless ($opt_fast) {
    $ENV{DEV_THROTTLE_KBPS} = $opt_KBps;
    $ENV{DEV_THROTTLE_LATENCY_MS} = $opt_latency_ms;
}

my $camlistored;
my $camdbinit; # closure to return path
if ($opt_nobuild) {
    $camlistored = find_bin("./server/camlistored");
    $camdbinit = sub { scalar find_bin("./cmd/camdbinit") };
} else {
    $camlistored = build_bin("./server/camlistored");
    $camdbinit = sub { scalar  build_bin("./cmd/camdbinit") };
}

my $root = "/tmp/camliroot-$ENV{USER}/port$port/";
if ($opt_wipe && -d $root) {
    print "Wiping $root\n";
    system("rm", "-rf", $root) and die "Failed to wipe $root.\n";
}

my $suffixdir = sub {
    my $suffix = shift;
    my $root = "$root/$suffix";
    unless (-d $root) {
        system("mkdir", "-p", $root) and die "Failed to create $root.\n";
    }
    return $root;
};

my $DBNAME = "devcamli$ENV{USER}";
my @opts;
if ($opt_wipe) {
    push @opts, "-wipe";
} else {
    push @opts, "-ignoreexists";
}

$ENV{"CAMLI_MYSQL_ENABLED"} = "false";
$ENV{"CAMLI_MONGO_ENABLED"} = "false";
$ENV{"CAMLI_POSTGRES_ENABLED"} = "false";
if ($opt_memory) {
    $ENV{"CAMLI_INDEXER_PATH"} = "/index-mem/";
} elsif ($opt_mongo) {
    $ENV{"CAMLI_MONGO_ENABLED"} = "true";
    $ENV{"CAMLI_INDEXER_PATH"} = "/index-mongo/";
    if ($opt_wipe) {
        $ENV{"CAMLI_MONGO_WIPE"} = "true";
    } else {
        $ENV{"CAMLI_MONGO_WIPE"} = "false";
    }
} elsif ($opt_postgres) {
    $ENV{"CAMLI_POSTGRES_ENABLED"} = "true";
    $ENV{"CAMLI_INDEXER_PATH"} = "/index-postgres/";
    system($camdbinit->(),
           "-postgres",
           "-user=postgres",
           "-password=postgres",
           "-host=localhost",
           "-database=$DBNAME",
           @opts) and die "Failed to run camdbinit.\n";
} else {
    $ENV{"CAMLI_MYSQL_ENABLED"} = "true";
    $ENV{"CAMLI_INDEXER_PATH"} = "/index-mysql/";
    system($camdbinit->(),
           "-user=root",
           "-password=root",
           "-host=localhost",
           "-database=$DBNAME",
           @opts) and die "Failed to run camdbinit.\n";
}

my $base = "http://localhost:$port";
my $listen = "127.0.0.1:$port";
if ($opt_all) {
    $listen = "0.0.0.0:$port";
    my $host = `hostname`;
    chomp $host;
    $base = "http://$host:$port";
}
if ($opt_tls) {
    $base =~ s/^http/https/;
}

$ENV{CAMLI_TLS} = "false";
if ($opt_tls) {
    $ENV{CAMLI_TLS} = "true";
}
$ENV{CAMLI_BASEURL} = $base;
$ENV{CAMLI_AUTH} = "userpass:camlistore:pass$port:+localhost";
$ENV{CAMLI_ADVERTISED_PASSWORD} = "pass$port"; # public password
$ENV{CAMLI_ROOT} = $suffixdir->("bs");
$ENV{CAMLI_ROOT_SHARD1} = $suffixdir->("s1");
$ENV{CAMLI_ROOT_SHARD2} = $suffixdir->("s2");
$ENV{CAMLI_ROOT_REPLICA1} = $suffixdir->("r1");
$ENV{CAMLI_ROOT_REPLICA2} = $suffixdir->("r2");
$ENV{CAMLI_ROOT_REPLICA3} = $suffixdir->("r3");
$ENV{CAMLI_ROOT_CACHE} = $suffixdir->("cache");
$ENV{CAMLI_PORT} = $port;
$ENV{CAMLI_SECRET_RING} = "$Bin/pkg/jsonsign/testdata/test-secring.gpg";
$ENV{CAMLI_DBNAME} = $DBNAME;

my $templatedir = "$Bin/dev-server-template";
if ($opt_wipe && -d $templatedir) {
    my $blobs = "$ENV{CAMLI_ROOT}/sha1";
    system("cp", "-a", $templatedir, $blobs) and die "Failed to cp template blobs.\n";
}

# To use resources from disk, instead of the copies linked into the
# binary:
unless ($opt_staticres) {
    $ENV{CAMLI_DEV_UI_FILES} = "$FindBin::Bin/server/camlistored/ui"; # set in server/camlistored/ui/fileembed.go
    $ENV{CAMLI_DEV_NEWUI_FILES} = "$FindBin::Bin/server/camlistored/newui"; # set in server/camlistored/newui/fileembed.go
    my $closure_dir = "tmp/closure";
    unless ($opt_offline) {
        if (-d $closure_dir) {
            chdir $closure_dir or die;
            my $local_rev = "r" . `svnversion`;
            chomp($local_rev);
            if ($local_rev ne $closure_rev) {
                die "No 'svn' found; install Subversion.\n" unless `which svn` =~ /\S/;
                system("svn", "update", "-r", $closure_rev)
                    and die "Failed to svn up the closure library: $!\n";
            }
            chdir $Bin or die;
        } else {
            die "No 'svn' found; install Subversion.\n" unless `which svn` =~ /\S/;
            system("svn", "checkout", "-r", $closure_rev, $closure_svn, "tmp")
                and die "Failed to svn co the closure library: $!\n";
        }
    }
}

print "Starting dev server on $base/ui/ with password \"pass$port\"\n";

exec("$camlistored",
     "-configfile=$Bin/config/dev-server-config.json",
     "-listen=$listen",
     @ARGV);
die "exec failure: $!\n";