#!/bin/bash

# Copyright (C) 2020, Xavier Guimard <yadd@debian.org>
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 3 of the License, or (at your
# option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
# Public License for more details.
#
# On Debian systems, the complete text of the GNU General Public License
# version 3 can be found in the /usr/share/common-licenses/GPL-3 file.

set -u

TESTTYPE=base
test_dir=$(readlink -f "${0%/*}")
. "$test_dir/lib_test_uscan"

SUFFIX="1"
if command -v dpkg-vendor >/dev/null; then
    VENDER="$(dpkg-vendor --query Vendor 2>/dev/null|tr 'A-Z' 'a-z')"
    case "$VENDER" in
        debian) SUFFIX="1" ;;
        *) SUFFIX="0${VENDER}1" ;;
    esac
fi

if test "${1:-}" = --installed; then
    COMMAND="uscan --no-conf --compression=gz"
    shift
else
    top_srcdir=$(readlink -f "${0%/*}/..")
    make -C "$top_srcdir/scripts" uscan mk-origtargz uupdate debchange
    PATH="$top_srcdir/scripts:$PATH"
    export PATH
    PERL5LIB="$top_srcdir/lib"
    export PERL5LIB
    COMMAND="uscan --no-conf --compression=xz"
fi

COMMANDDEHS="$COMMAND --dehs"

# comment out for debug
#COMMAND="$COMMAND --debug"

tearDown(){
    killHttpServer
    echo
}

trap tearDown EXIT

containsName(){
  echo "$1" | grep -qF "$2"
  echo $?
}

makeRepo() {
    lv="$1"
    cmpopt1="$2"
    lv1="$3"
    cmpopt2="$4"
    lv2="$5"
    cmpopt3="$6"
    lv3="$7"
    cmpopt4="$8"
    lv4="$9"
    prev="${10}"
    PKG=foo
    TEMP_PKG_DIR=$(mktemp -d -p "$SHUNIT_TMPDIR")

    mkdir -p "$TEMP_PKG_DIR"/$PKG/debian/source
    spawnHttpServer
    PORT=$(cat "$TEMP_PKG_DIR"/repo/port)

    cat <<END > "$TEMP_PKG_DIR"/$PKG/debian/watch
version=4
http://localhost:$PORT/ .*$PKG-([\d\.]+).tar.gz $lv

opts="dversionmangle=auto,component=bar1$cmpopt1" http://localhost:$PORT/ .*bar1-([\d\.]+).tar.gz $lv1
opts="dversionmangle=auto,component=bar2$cmpopt2" http://localhost:$PORT/ .*bar2-([\d\.]+).tar.gz $lv2
opts="dversionmangle=auto,component=bar3$cmpopt3" http://localhost:$PORT/ .*bar3-([\d\.]+).tar.gz $lv3
opts="dversionmangle=auto,component=bar4$cmpopt4" http://localhost:$PORT/ .*bar4-([\d\.]+).tar.gz $lv4
END

    cat <<END > "$TEMP_PKG_DIR"/$PKG/debian/changelog
$PKG ($prev) unstable; urgency=medium

  * Initial release

 -- Joe Developer <jd@debian.org>  Mon, 02 Nov 2013 22:21:31 -0100
END

    echo -n '3.0 (quilt)' > "$TEMP_PKG_DIR"/$PKG/debian/source/format
    mkdir -p "$TEMP_PKG_DIR"/repo/foo
    touch "$TEMP_PKG_DIR"/repo/foo/content

    # Upstream repo
    ( cd "$TEMP_PKG_DIR"/repo ;
      tar -czf $PKG-1.0.0.tar.gz $PKG/* )

    for i in 1 2 3 4; do
      # Upstream repo
      mkdir -p "$TEMP_PKG_DIR"/repo/bar$i
      touch "$TEMP_PKG_DIR"/repo/bar$i/content
      ( cd "$TEMP_PKG_DIR"/repo ;
        tar -czf bar$i-2.0.$i.tar.gz bar$i/* )
      # Debian dir
      mkdir $TEMP_PKG_DIR/$PKG/bar$i
      echo '{"name":"bar'$i'","version":"'1.0.$i'"}' > $TEMP_PKG_DIR/$PKG/bar$i/package.json
    done
}

helperDownload() {
    next="${11}"
    makeRepo "$@"

    OUTPUT=$( cd "$TEMP_PKG_DIR"/$PKG ; $COMMANDDEHS --dehs )
    BASETARBALL=${PKG}_$next.orig
    assertTrue 'pristine tarball foo is not created' "[ -f "$TEMP_PKG_DIR"/$BASETARBALL.tar.gz ]"
    assertTrue "malformed target in dehs output: $OUTPUT" \
               $(containsName "$OUTPUT" "<target>$BASETARBALL.tar.gz</target>")
    for i in 1 2 3 4; do
      assertTrue "pristine tarball bar$i is not created" "[ -f "$TEMP_PKG_DIR"/$BASETARBALL-bar$i.tar.gz ]"
      assertTrue "malformed target in dehs output: $OUTPUT" \
                 $(containsName "$OUTPUT" "<component-target>$BASETARBALL-bar$i.tar.gz</component-target>")
    done
    #cat "$TEMP_PKG_DIR"/$PKG/debian/watch
}

testCmpIgnore() {
  helperDownload "debian" "" "ignore" "" "ignore" "" "ignore" "" "ignore" "0.0.1" "1.0.0"
}

testCmpGroup() {
  helperDownload "group" "" "group" "" "group" "" "group" "" "group" "0.0.1+~1" "1.0.0+~2.0.1+~2.0.2+~2.0.3+~2.0.4"
}

testCmpGroupOneCmpChanged() {
  helperDownload "group" "" "group" "" "group" "" "group" "" "group" "1.0.0+~2.0.1+~2.0.2+~2.0.2+~2.0.4" "1.0.0+~2.0.1+~2.0.2+~2.0.3+~2.0.4"
}

testCmpPartialGroup() {
  helperDownload "group" "" "group" "" "group" "" "ignore" "" "ignore" "0.0.1+~1" "1.0.0+~2.0.1+~2.0.2"
}

testCmpPartialGroup2() {
  helperDownload "group" "" "group" "" "ignore" "" "group" "" "ignore" "0.0.1+~1" "1.0.0+~2.0.1+~2.0.3"
}

testCmpChecksum() {
  helperDownload "group" "" "checksum" "" "checksum" "" "checksum" "" "checksum" "0.0.1+~1" "1.0.0+~cs8.0.10"
}

testCmpChecksumOneCmpChanged() {
  helperDownload "group" "" "checksum" "" "checksum" "" "checksum" "" "checksum" "1.0.0+~cs8.0.9" "1.0.0+~cs8.0.10"
}

testCmpGroupAndChecksum() {
  helperDownload "group" "" "group" "" "checksum" "" "checksum" "" "checksum" "0.0.1+~1" "1.0.0+~2.0.1+~cs6.0.9"
}

testCmpGroupIgnoreAndChecksum() {
  helperDownload "group" "" "group" "" "ignore" "" "checksum" "" "checksum" "0.0.1+~1" "1.0.0+~2.0.1+~cs4.0.7"
}

helperNoDownload() {
    next="${10}"
    makeRepo "$@"

    OUTPUT=$( cd "$TEMP_PKG_DIR"/$PKG ; $COMMANDDEHS --dehs 2>&1 )
    assertTrue "bad change detected: $OUTPUT" \
               $(containsName "$OUTPUT" "<status>up to date</status>")
    BASETARBALL=${PKG}_$next.orig
    assertTrue 'pristine tarball foo is created' "[ ! -f "$TEMP_PKG_DIR"/$BASETARBALL.tar.gz ]"
}

testCmpIgnoreND() {
  helperNoDownload "debian" "" "ignore" "" "ignore" "" "ignore" "" "ignore" "1.0.0"
}

testCmpGroupND() {
  helperNoDownload "group" "" "group" "" "group" "" "group" "" "group" "1.0.0+~2.0.1+~2.0.2+~2.0.3+~2.0.4"
}

testCmpGroupRepackND() {
  helperNoDownload "group" "" "group" "" "group" "" "group" "" "group" "1.0.0+~2.0.1~ds+~2.0.2+~2.0.3+~2.0.4"
}

testCmpChecksumND() {
  helperNoDownload "group" "" "checksum" "" "checksum" "" "checksum" "" "checksum" "1.0.0+~cs8.0.10"
}

# Same test but here Ctype detects change even if previous checksum is wrong
testCmpChecksumCtype() {
  helperDownload "group" ",ctype=nodejs" "checksum" ",ctype=nodejs" "checksum" ",ctype=nodejs" "checksum" ",ctype=nodejs" "checksum" "1.0.0+~cs8.0.10" "1.0.0+~cs8.0.10"
}

testCmpIgnoreCtype() {
  helperNoDownload "debian" ",ctype=nodejs" "ignore" "" "ignore" "" "ignore" "" "ignore" "1.0.0"
  assertTrue "Component change is not detected: $OUTPUT" \
             $(containsName "$OUTPUT" "Newest version of bar1 on remote site is 2.0.1, local version is 1.0.1")
}

. shunit2