#!/bin/bash
# set -xv
#
# Program:	mkchannels
# Purpose:	Create channels on Tivo
# Author:	Indulis Bernsteins
# Version:	0.1
# Date:		15 May 2003
# Usage:	mkchannels source ChannelFile City ChannelType
#
#		Source
#			The source object you'd like to add the channels to
#
#		ChannelFile
#			name of file which has list of channels by city
#
#		City
#			Which entries in the ChannelFile to add to the Tivo
#	 	
# Run this program once for each source to populate
#
# ---------------------------------------------------------------------
# Format of the ChannelFile...
#
# Comment line starts with a #
# City ShortChannelName ChannelID ChannelNum LongChannelName
#
# City = just a name which must match the city name given to mkchannels
#
# ShortChannelName = Name which appears on Tivo where there is limited space
#                       on the screen
#
# ChannelID = a number which matches the channel ID in the slice file
#                        you downloaded
#
# ChannelNum = the buttons you push on the remote to change to this channel
#                       (or the channel # in the Tivo tuner)
#               In other words, what channel is is programmed to on your
#               VCR or set-top box or cable box or...
#       ***NOTE*** ChannelNum is the most likely thing you'll need to change
#       if you don't have a "standard" setup
#
# LongChannelName = Name which appears in long listing on the Tivo
# ---------------------------------------------------------------------
#
# Note that you DO NOT have to put the NoNag channel in, mkchannels will
# do this for you

# set bash options
shopt -s extglob	# use POSIX globbing

# initialise variables
typeset -ix my_numfound
my_numfound=0		# counts the number of times a line matching given
			# city is found in the input file
my_usage_text="Usage: $0 source/setup ChannelFile City"
my_home="/var/hack/guide"


# ---------------------------------------------------------------------
# check inputs as much as we can
# ---------------------------------------------------------------------

if [[ ( $# -ne 3 ) ]]
then
# not enough options given
	echo $my_usage_text
	echo "You did not supply the correct number of parameters (hint: 3!)"
	exit 1
fi 

my_source=$1
my_chanfile=$2
my_city=$3

# make sure we can find channel file which maps channels to cities to...
#
if [[ ! (-f $my_chanfile) ]] 
then
	echo "Could not find the file $my_chanfile"
	exit 1
fi
if [[ ! (-r $my_chanfile) ]] 
then
	echo "Could not read the file $my_chanfile- probably permissions problem"
	exit 1
fi

# who knows if they got city right, we'll have to check that we can find at
# least one line in the file by using my_numfound later

# ---------------------------------------------------------------------
# now start parsing the file for matching cities and add the channels
# ---------------------------------------------------------------------

cat $my_chanfile | {
while read my_linecity my_shortchname my_chanid my_channum my_longchanname
do
	my_linecity=${my_linecity##*([[:space:]])}
			# remove whitespace from start of line
	my_linecity=${my_linecity%%*([[:space:]])}	
			# remove whitespace from end of line
	my_a=${my_linecity##\#}			# see if we start with #
	if [[ ( $my_a = $my_linecity ) && ! ( x$my_linecity = x ) && ( $my_linecity = $my_city ) ]]
	then	# it was not a comment line or a blank line 
		# and it matched the city we wanted
	my_numfound=$my_numfound+1	
	# ----------------------
	# add the channels
	# ----------------------
	echo "tivosh $my_home/add-whole-channel.tcl $my_chanid $my_channum $my_shortchname \"$my_longchanname\" $my_source"
	my_longchanname=\"$my_longchanname\"
	echo "exec $my_home/add-whole-channel.tcl $my_chanid $my_channum $my_shortchname $my_longchanname $my_source" | tivosh
	
	fi
done

# ---------------------------------------------------------------------
# check to see if we found ANY matching channels
# ---------------------------------------------------------------------

if [[ ( $my_numfound -eq 0 )  ]]
then
	echo "ERROR! Could not find any channels in file $my_chanfile to match city $my_city"
	echo "Please check for misspelling and uppercase/lowercase mismatches"
	exit 1
fi

}

exit 0