#!/bin/sh
#
# $Id: $
#
# Set up clean fallback environmental constraints
CSV_FILE="$1"
OUTPUT_DIR="${HOME}/.audio_selector"
INSTALL_LOG_FILE="${OUTPUT_DIR}/install.log"

# Ensure log container path environment exists
mkdir -p "${OUTPUT_DIR}"

# Redirect stdout and stderr straight into the installation progress log file
exec > "${INSTALL_LOG_FILE}" 2>&1

echo "=== SYSTEM INSTALLATION LOG ENGINE ==="
echo "Evaluating environment platform metrics..."

if [ -z "${CSV_FILE}" ] || [ ! -f "${CSV_FILE}" ]; then
    echo "ERROR: Target CSV upload configuration file missing or argument empty."
    echo "STATUS=FAILED"
    exit 1
fi

# 1. Dynamic platform packet manager target determination
PKG_MANAGER_CMD=""
if [ -f /etc/os-release ]; then
    . /etc/os-release
    OS_ID=$(echo "$ID" | tr '[:upper:]' '[:lower:]')
    
    case "$OS_ID" in
        raspbian|debian|ubuntu)
            PKG_MANAGER_CMD="sudo apt-get install -y"
            ;;
        fedora|almalinux|rocky)
            if command -v dnf >/dev/null 2>&1; then
                PKG_MANAGER_CMD="sudo dnf install -y"
            else
                PKG_MANAGER_CMD="sudo yum install -y"
            fi
            ;;
        *suse*)
            PKG_MANAGER_CMD="sudo zypper --non-interactive install"
            ;;
        arch)
            PKG_MANAGER_CMD="sudo pacman -S --noconfirm"
            ;;
    esac
fi

if [ -z "${PKG_MANAGER_CMD}" ]; then
    echo "CRITICAL ERROR: Package manager not supported for distribution: $ID"
    echo "STATUS=FAILED"
    exit 1
fi

# 2. Parse current host environment OS profile variables safely
HOST_TARGET_MATCH_STR=$(echo "${ID}-${VERSION_ID}" | tr '[:upper:]' '[:lower:]')
echo "Target Distribution Profile Match Key: ${HOST_TARGET_MATCH_STR}"
echo "Processing items from input configuration archive..."
echo ""

ERROR_ENCOUNTERED=0
LINE_NUM=0

# Read the uploaded CSV file line-by-line using a clean loop
while IFS=, read -r csv_target_os binary_path package_name systemd_service supervise_cmd || [ -n "$csv_target_os" ]; do
    LINE_NUM=$((LINE_NUM + 1))
    
    # Trim leading/trailing whitespace parameters safely
    csv_target_os=$(echo "$csv_target_os" | tr -d '\r' | xargs)
    binary_path=$(echo "$binary_path" | xargs)
    package_name=$(echo "$package_name" | xargs)
    systemd_service=$(echo "$systemd_service" | xargs)
    supervise_cmd=$(echo "$supervise_cmd" | tr -d '\r' | xargs)

    # Ignore comments and empty string frames
    case "$csv_target_os" in
        \#*|"") continue ;;
    esac

    # Validate all required minimal parameters exist on row step
    if [ -z "$binary_path" ] || [ -z "$package_name" ]; then
        echo "[Line ${LINE_NUM}]: Skipped. Insufficient fields."
        continue
    fi

    # Field A Validation: OS Profile Verification
    CSV_OS_LOW=$(echo "$csv_target_os" | tr '[:upper:]' '[:lower:]')
    if [ "$CSV_OS_LOW" != "$HOST_TARGET_MATCH_STR" ]; then
        echo "[Line ${LINE_NUM}]: Skipped profile mismatch (\"${csv_target_os}\")."
        continue
    fi

    # Field B & C Validation: Binary check logic framework target operations
    if [ -f "$binary_path" ] || command -v "$binary_path" >/dev/null 2>&1; then
        echo "[Line ${LINE_NUM}]: Target binary \"${binary_path}\" is already verified on disk."
    else
        echo "[Line ${LINE_NUM}]: Deploying package -> \"${package_name}\"..."
        if ${PKG_MANAGER_CMD} "${package_name}"; then
            echo " -> Successfully installed package: ${package_name}"
        else
            echo " -> ERROR: Installation instruction failed for package: ${package_name}"
            ERROR_ENCOUNTERED=1
            break
        fi
    fi

    # Field D Execution: Optional Systemd unit containment tracking loops
    if [ -n "$systemd_service" ] && [ "$systemd_service" != "-" ]; then
        echo "[Line ${LINE_NUM}]: Confining overlapping systemd unit tracker -> \"${systemd_service}\"..."
        if sudo systemctl stop "${systemd_service}" && sudo systemctl disable "${systemd_service}"; then
            echo " -> Service ${systemd_service} disabled cleanly."
        else
            echo " -> Warning handling systemd context configuration modifications."
        fi
    fi

    # Field E Execution: Optional Daemontools supervisor build deployment sequence
    if [ -n "$supervise_cmd" ] && [ "$supervise_cmd" != "-" ]; then
        echo "[Line ${LINE_NUM}]: Launching supervisor generation step command -> \"${supervise_cmd}\"..."
        if eval "$supervise_cmd"; then
            echo " -> Supervised service container configured cleanly."
        else
            echo " -> ERROR: Supervision container script setup command failed."
            ERROR_ENCOUNTERED=1
            break
        fi
    fi

done < "$CSV_FILE"

# Final Status Assignment evaluation tracking metrics block
if [ $ERROR_ENCOUNTERED -ne 0 ]; then
    echo ""
    echo "=== RUNTIME SEQUENCE HALTED DUE TO ERRORS ==="
    echo "STATUS=FAILED"
    exit 1
else
    # Automatically execute your initialization script on absolute clean completion
    echo ""
    echo "=== ALL PARSED DEPENDENCIES INSTALLED SUCCESSFULLY ==="
    echo "STATUS=COMPLETED"
    exit 0
fi

#
# $Log: $
#
