#!/bin/sh
#------------------------------------------------------------------------------
# =========                 |
# \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
#  \\    /   O peration     |
#   \\  /    A nd           | www.openfoam.com
#    \\/     M anipulation  |
#------------------------------------------------------------------------------
#     Copyright (C) 2020 OpenCFD Ltd.
#------------------------------------------------------------------------------
# License
#     This file is part of OpenFOAM, distributed under GPL-3.0-or-later.
#
# Script
#     bin/tools/vscode-settings
#
# Description
#     Emit some settings for Visual Studio Code + OpenFOAM
#
# Example
#     bin/tools/vscode-settings > .vscode/settings.json
#     etc/openfoam -spdp -int64 bin/tools/vscode-settings
#
# Environment
#     WM_PROJECT_DIR, WM_PROJECT_USER_DIR, WM_OPTIONS
#
# More information:
# https://openfoamwiki.net/index.php/HowTo_Use_OpenFOAM_with_Visual_Studio_Code
#
#------------------------------------------------------------------------------
# Values consistent with wmake-with-bear
cacheDirName="build/$WM_OPTIONS"

printHelp() {
    cat<<USAGE

Usage: ${0##*/} [OPTIONS]

options:
    -help           Print the usage

Emit some settings for Visual Studio Code + OpenFOAM

For example,
    bin/tools/vscode-settings > .vscode/settings.json
    etc/openfoam -spdp -int64 bin/tools/vscode-settings

USAGE
    exit 0  # clean exit
}


#------------------------------------------------------------------------------

unset outputDir

# Parse options
while [ "$#" -gt 0 ]
do
    case "$1" in
    -h | -help*)
        printHelp
        ;;
    *)
        echo "Unknown option/argument: '$1'" 1>&2
        break
        ;;
    esac
    shift
done


#------------------------------------------------------------------------------
# Report settings and flag errors
projectDir="$WM_PROJECT_DIR"
session="$projectDir"/etc/openfoam

echo "project: ${WM_PROJECT_DIR:?OpenFOAM environment not set?}" 1>&2
echo "options: ${WM_OPTIONS:?not set}" 1>&2
if [ -x "$session" ]
then
    echo "session: $session" 1>&2
else
    echo "No session: $session" 1>&2
fi

if [ -z "$outputDir" ]
then
    prefixDir="$projectDir"
    if ! [ -w "$prefixDir" ]
    then
        echo "Non-writable directory: $prefixDir" 1>&2
        echo "Try with user location" 1>&2
        prefixDir="$WM_PROJECT_USER_DIR"

        if ! [ -w "$prefixDir" ]
        then
            echo "Non-writable directory: $prefixDir" 1>&2
            echo "Using home directory" 1>&2
            prefixDir="$HOME"
        fi
    fi
    outputDir="$prefixDir/$cacheDirName"
fi


## echo "Output = $outputDir" 1>&2

# JSON output. Long entries are outdented.
cat << INFO 1>&2
# -------------------------
# Some settings for Visual Studio Code + OpenFOAM
# -------------------------
INFO

echo '{'  # BEGIN_LIST

# ccls integration
cat << JSON_CONTENT
    "ccls.cache.directory":
"$outputDir/ccls-cache",

    "ccls.misc.compilationDatabaseDirectory":
"$outputDir",

JSON_CONTENT


# Compilation via openfoam session
if [ -x "$session" ]
then
cat << JSON_CONTENT
    "C_Cpp.default.compileCommands":
"$session wmake -with-bear -s -j",
JSON_CONTENT
fi

cat << JSON_CONTENT

    "C_Cpp.autocomplete": "Disabled",
    "C_Cpp.errorSquiggles": "Disabled",
    "C_Cpp.formatting": "Disabled",
    "C_Cpp.intelliSenseEngine": "Disabled"
JSON_CONTENT

echo '}'  # END_LIST

#------------------------------------------------------------------------------