#!/usr/bin/env bash -e
#
# Copyright 2020 ALT-TEKNIK LLC

# Parse arguments
gitea_domain=git.alt-tek.com
unset version
while [[ $# -gt 0 ]]
do
    arg=$1
    shift
    case $arg in
    -h|--help)
        IFS= read -rd '' usage << __eof__ || true
Usage: release [-h] version

Builds a release and uploads it to $gitea_domain as a draft

Positional arguments:
    version     The release version

Optional arguments:
    -h, --help  Show this help message and exit
__eof__
        echo -n "$usage"
        exit 0
        ;;
    -*|--*)
        echo "Invalid argument '$arg'.  Use -h for help." >&2
        exit 1
        ;;
    *)
        if [[ -v version ]]
        then
            echo "Invalid argument '$arg'.  Use -h for help." >&2
            exit 1
        fi
        version=$arg
    esac
done
if [[ -z $version ]]
then
    echo 'Missing version argument.  Use -h for help.' >&2
    exit 1
fi

# Initialize globals used by handle-trap
signals='INT TERM'
unset tmp_dir
prj_name=bgtex
tea_login=$prj_name-release

# Usage: handle-trap [exit_code]
#
# Deletes temporary files and logs out of Tea upon script exit or signal
#
# Positional arguments:
#   exit_code   Optional exit code for which to trigger a script exit
function handle-trap {
    trap - EXIT $signals
    rm -rf "$tmp_dir"
    tea logout -n "$tea_login"
    if [[ $1 ]]
    then
        exit "$1"
    fi
}

# Set the trap
trap handle-trap EXIT
trap 'handle-trap 1' $signals

# Create a temporary build directory
tmp_dir=$(mktemp -d)

# Git a clean clone
repo=alt-tek/$prj_name
git_dir=$tmp_dir/git
git clone "$gitea_domain:$repo" "$git_dir"
cd "$git_dir"
tag=v$version
git checkout "tags/$tag" -b "tmp/$tag-build"

# Create the archive directory
archive_name=${prj_name}_$version
archive_dir=$tmp_dir/$archive_name
mkdir "$archive_dir"

# Request a plot of the schematic
sch_dir_name=schematic
sch_dir=$tmp_dir/$sch_dir_name
mkdir "$sch_dir"
sch_basename=$prj_name.sch
IFS= read -rd '' sch_instructions << __eof__ || true
Opening $sch_basename with Eeschema...
    1. From the 'File' menu, select 'Page Settings...'
        a. Set 'Issue Date' to '$(date +%Y.%m.%d)'
        b. Set 'Revision' to '$version'
        c. Press 'OK'
    2. From the 'File' menu, select 'Plot...'
        a. Select 'PDF' for 'Output Format'
        b. Select 'Schematic size' for 'Page size'
        c. Enable 'Plot border and title block'
        d. Select 'Color' for 'Output mode'
        e. Set 'Default line width' to 6mils
        e. Set 'Output directory' to '../$sch_dir_name'
        f. Press 'Plot All Pages'
        g. Press 'Close'
    3. From the 'Eeschema' menu, select 'Quit eeschema'
        a. Press 'Discard Changes' when prompted to save
__eof__
echo -n "$sch_instructions"
open -Wa eeschema "$git_dir/$sch_basename"
cp "$sch_dir/$prj_name.pdf" "$archive_dir/$prj_name-schematic.pdf"
echo "Plotted $sch_basename"

# Generate board plots
plot_dir=$git_dir/plots
rm -rf "$plot_dir"
./plot.py "$version"
cp "$plot_dir"/* "$archive_dir"

# Tar and Gzip the archive
archive=$tmp_dir/$archive_name.tar.gz
tar -czf "$archive" -C "$tmp_dir" "$archive_name"

# Draft the release
tea_token=$(<"$HOME/.config/$gitea_domain/api-token")
tea login add -n "$tea_login" -u "https://$gitea_domain" -t "$tea_token"
tea releases create -l "$tea_login" -r "$repo" --tag "$tag" -d \
    -t "Version $version" -a "$archive"
echo "Drafted https://$gitea_domain/$repo/releases $tag"