#!/bin/bash

set -x
set -e
set -o pipefail

major_version=3
dir=/tmp/clipmenu.$major_version.$USER
cache_file=$dir/line_cache

if [[ $0 == /* ]]; then
    location=${0%/*}
else
    location=$PWD/${0#./}
    location=${location%/*}
fi

cat - "$location/../clipmenu" > /tmp/clipmenu << 'EOF'
#!/bin/bash

shopt -s expand_aliases

shim() {
    printf '%s args:' "$1" >&2
    printf ' %q' "${@:2}" >&2
    printf '\n' >&2

    i=0

    while IFS= read -r line; do
        let i++
        printf '%s line %d stdin: %s\n' "$1" "$i" "$line" >&2
    done

    if [[ -v SHIM_STDOUT ]]; then
        printf '%s\n' "$SHIM_STDOUT"
    fi
}

# Cannot be an alias due to expansion order with $CM_LAUNCHER
dmenu() {
    SHIM_STDOUT="Selected text. (2 lines)" shim dmenu "$@"
}

rofi() {
    SHIM_STDOUT="Selected text. (2 lines)" shim rofi "$@"
}

alias xsel='shim xsel'
alias xclip='shim xclip'
EOF

chmod a+x /tmp/clipmenu

rm -rf "$dir"
mkdir -p "$dir"

cat > "$cache_file" << 'EOF'
Selected text. (2 lines)
Selected text 2. (2 lines)
EOF

cat > "$dir/$(cksum <<< 'Selected text. (2 lines)')" << 'EOF'
Selected text.
Yes, it's selected text.
EOF

### TESTS ###

temp=$(mktemp)
trap 'rm -f -- "$temp"' EXIT

/tmp/clipmenu --foo bar > "$temp" 2>&1

# Arguments are transparently passed to dmenu
grep -Fxq 'dmenu args: -l 8 --foo bar' "$temp"

# Output from cache file should get to dmenu, reversed
grep -Fxq 'dmenu line 1 stdin: Selected text 2. (2 lines)' "$temp"
grep -Fxq 'dmenu line 2 stdin: Selected text. (2 lines)' "$temp"

# xsel should copy both to clipboard *and* primary
grep -Fxq 'xsel args: --logfile /dev/stderr -i --clipboard' "$temp"
grep -Fxq 'xsel args: --logfile /dev/stderr -i --primary' "$temp"

grep -Fxq 'xsel line 1 stdin: Selected text.' "$temp"
grep -Fxq "xsel line 2 stdin: Yes, it's selected text." "$temp"

CM_LAUNCHER=rofi /tmp/clipmenu --foo bar > "$temp" 2>&1

# We have a special case to add -dmenu for rofi
grep -Fxq 'rofi args: -l 8 -dmenu --foo bar' "$temp"