#!/bin/sh
# tcl magic \
exec tclsh8.2 $0 $*

#
# This software is copyright Daniel O'Connor (darius@dons.net.au) 1998, 1999
#
# This software is release under the GNU Public License Version 2.
# A copy of this licence must be distributed with this software.
#

proc main {} {
    global argv0 argv tracks auto_path;

    lappend auto_path ".";

    if { [ llength $argv ] < 4 } {
	puts stderr "Bad usage";
	puts stderr "$argv0 <outfile> <discid> \[ <tracks> ... \] <disclen>";
	exit 1;
    }
    set outfile [ lindex $argv 0 ];
    set discid [ lindex $argv 1 ];
    set trackoffs [ lrange $argv 2 [ expr [ llength $argv ] - 2 ] ];
    set disclen [ lindex $argv end ];

    if { $outfile == "-" } {
	set wfh stdout;
    } else {
	set wfh [ open $outfile "w" ];
    }

#    set fh [ socket cddb.cddb.com 8880 ];
    if {[catch {set fh [socket freedb.freedb.org 888]} msg]} {
	puts stderr "Unable to connect to CDDB - $msg";
	puts stderr "Generating dummy file";
	generate_dummy $wfh $discid $disclen $trackoffs ;
	exit 0;
    }

    # Greeting from server
    puts [ gets $fh ];
    #gets $fh;

    puts $fh "CDDB HELLO [ exec id -u -n ] [ exec hostname ] TclMangler 0.1";
    puts "CDDB HELLO [ exec id -u -n ] [ exec hostname ] TclMangler 0.1";
    flush $fh

    puts "Said hello"

    # Hello message
#    puts [ gets $fh ];
    gets $fh;

    puts $fh "CDDB QUERY $discid [ llength $trackoffs ] $trackoffs $disclen"
    puts "CDDB QUERY $discid [ llength $trackoffs ] $trackoffs $disclen"
    flush $fh 

    puts "Queried"
    set line [ gets $fh ];
    puts "Got - $line"
    if { [ regexp {([0-9][0-9][0-9]) (.*)} $line a rtn rest ] } {
	switch -- $rtn {
	    "200" {
		if { [ regexp {([a-z]*) ([0-9a-f]*) (.*)} $rest a cat discid name ] } {
		    puts stderr "Matched CD called $name in category $cat";
		} else {
		    puts stderr "Couldn't parse line with code 200 '$rest'";
		    exit 1;
		}
	    }

	    "202" {
		puts stderr "No such CD found.. generating dummy file";
		generate_dummy $wfh $discid $disclen $trackoffs ;

		puts "Wrote dummy";
		exit;
	    }

	    "211" {
		set tot 0;
		set matches "";

		while { 1 } {
		    set line [ gets $fh ];
		    if { $line == "." } {
			break;
		    }

		    if { [ regexp {^([a-z]*) ([0-9a-f]*) (.*)} $line a cat discid name ] } {
			puts stderr "[ expr $tot + 1 ]) Matched CD called $name in category $cat";
			lappend matches [ list $cat $discid $name ];
			incr tot;
		    } else {
			puts stderr "Couldn't parse line after code 210 - '$line'";
			exit 1;
		    }
		}
		
		if { $tot == 0 } {
		    puts stderr "No matches found for 210?";
		    exit 1;
		}

		if { $tot == 1 } {
		    puts "Only 1 partial match";
		    set num 0;
		} else {
		    puts stderr "Please enter the number which corresponds to the correct entry";
		    while { 1 } {
			set num [ gets stdin ];
			if { ($num >= 1) && ($num <= $tot ) } {
			    break;
			}
			puts stderr "Sorry, that number is invalid, please try again";
		    }

		    set cat [ lindex [ lindex $matches [ expr $num - 1 ] ] 0 ];
		    set discid [ lindex [ lindex $matches [ expr $num - 1 ] ] 1 ];
		    set name [ lindex [ lindex $matches [ expr $num - 1 ] ] 2 ];
		}
	    }

	    "501" {
		puts stderr"Invalid disc ID $discid";
		exit 1;
	    }

	    default {
		puts stderr "Couldn't parse '$line'";
		exit 1;
	    }
	}
    }

    puts $fh "CDDB READ $cat $discid"
    flush $fh
    
    gets $fh line;

    if { [ regexp {([0-9][0-9][0-9]) (.*)} $line a rtn rest ] } {
	if { $rtn != "210" } {
	    puts stderr "Bad error from CDDB READ command ($line)"
	    exit 1;
	}
    } else {
	puts stderr "Couldn't parse $line";
	exit 1;
    }

    while { 1 } {
	set line [ gets $fh ];
	if { $line == "." } {
	    break;
	}
	
	puts $wfh $line;
    }

    close $fh;
}

proc generate_dummy {fh discid disclen trackoffs} {

    puts $fh "# xmcd CD database file
# Copyright (C) 1993-1999 CDDB, Inc.
#
# Track frame offsets:";
    foreach t $trackoffs {
	puts $fh "#\t$t";
    }

    puts $fh "#
# Disc length: $disclen seconds
#
# Revision: 1
# Submitted via: Tcl Mangler 0.1 - Copyright (c) 1999 Daniel O'Connor
#
DISCID=$discid
DTITLE=";
    set i 0;
    foreach t $trackoffs {
	puts $fh "TTITLE$i=";
	incr i
    }
}

main;