#!/bin/bash -e

script_dir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
project_dir="$( dirname "$( dirname "$script_dir" )" )"
source_dir="$project_dir/src"
unit_tests_dir="$project_dir/build/tests/unit"

generated_dir="$script_dir/generated"
html_dir="$generated_dir/html"
data_file="$generated_dir/default.profdata"
json_file="$generated_dir/report.json"
coverage_file="$generated_dir/coverage.json"
summary_file="$generated_dir/summary.rmu"

# cleanup output directory
if [ -d "$generated_dir" ]; then
    rm -rf "$generated_dir"
fi
mkdir "$generated_dir"

# merge raw coverage info
raw_files="$( find "$unit_tests_dir" -name "*.profraw" | sort | tr '\n' ' ' )"
llvm-profdata merge -sparse $raw_files -o "$data_file"

# create list of binaries
obj_files="$( echo "$raw_files" | sed "s/\.profraw//g" | sed -r 's/ +$//g' | sed "s/ / -object /g" )"

# create list of source files
src_files=$( find "$source_dir" \( -name '*.cpp' -o -name '*.hpp' \) -print | sort | tr '\n' ' ' )

# generate html output
llvm-cov show $obj_files \
    -format html \
    -instr-profile "$data_file" \
    -o "$html_dir" \
    -show-line-counts-or-regions \
    -Xdemangler c++filt -Xdemangler -n \
    $src_files

# generate json output
llvm-cov export $obj_files \
    -instr-profile "$data_file" \
    -Xdemangler c++filt -Xdemangler -n \
    $src_files > "$json_file"

# process json output
$script_dir/coverage_parse_export "$json_file" "$coverage_file" "$summary_file" $src_files