#!/usr/bin/env bash
# Discovers and runs all test_*.sh files, printing a combined summary.
#
# Usage:
#   ./tests/run_tests.sh          # run all suites
#   ./tests/run_tests.sh [file]   # run a specific suite

set -uo pipefail

TESTS_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

# ---- Colors (self-contained) ----
_R='\033[0;31m'; _G='\033[0;32m'; _B='\033[1m'; _D='\033[2m'; _N='\033[0m'

total_pass=0
total_fail=0
failed_suites=()

run_suite() {
    local file="$1"
    local name
    name="$(basename "$file")"

    printf "\n${_B}══════ %s ══════${_N}\n" "$name"

    local output exit_code=0
    output=$(bash "$file" 2>&1) || exit_code=$?

    echo "$output"

    # Count results — strip ANSI codes first so the unicode chars are findable
    local stripped p f
    stripped=$(printf '%s' "$output" | sed 's/\x1b\[[0-9;]*[mGKHF]//g')
    p=$(printf '%s\n' "$stripped" | grep -c '✓' || true)
    f=$(printf '%s\n' "$stripped" | grep -c '✗' || true)

    total_pass=$((total_pass + p))
    total_fail=$((total_fail + f))

    if [[ $exit_code -ne 0 ]]; then
        failed_suites+=("$name")
    fi
}

# Collect files to run
if [[ $# -gt 0 ]]; then
    files=("$@")
else
    files=("$TESTS_DIR"/test_*.sh)
fi

for f in "${files[@]}"; do
    [[ -f "$f" ]] || { printf "${_R}Not found: %s${_N}\n" "$f" >&2; continue; }
    run_suite "$f"
done

# ---- Aggregate summary ----
total=$((total_pass + total_fail))

printf "\n${_B}══════ Summary ══════${_N}\n"
printf "Suites run:  %d\n" "${#files[@]}"
printf "Tests:       %d total, " "$total"

if [[ $total_fail -eq 0 ]]; then
    printf "${_G}%d passed${_N}\n" "$total_pass"
    printf "\n${_G}All tests passed.${_N}\n"
    exit 0
else
    printf "${_G}%d passed${_N}, ${_R}%d failed${_N}\n" "$total_pass" "$total_fail"
    printf "\n${_R}Failed suites:${_N}\n"
    for s in "${failed_suites[@]}"; do
        printf "  - %s\n" "$s"
    done
    exit 1
fi