#!/usr/bin/env bash
# net-ops :: probe (dispatcher)
# Detects the local OS and runs the matching per-OS probe with the same args.
# Supports --watch=N for continuous monitoring (prints state on change only).
# For Windows targets you reach over SSH, invoke scripts/windows/probe.ps1
# directly via PowerShell (see scripts/ssh-bootstrap.sh for the pattern).

set -eu

here="$(cd "$(dirname "$0")" && pwd)"

# Parse --watch (with optional =N seconds; default 30)
watch_interval=0
clean_args=()
for arg in "$@"; do
    case "$arg" in
        --watch)        watch_interval=30 ;;
        --watch=*)      watch_interval="${arg#--watch=}" ;;
        *)              clean_args+=("$arg") ;;
    esac
done

# Resolve the per-OS probe script
case "$(uname -s 2>/dev/null)" in
    Darwin) target="$here/macos/probe.sh" ;;
    Linux)  target="$here/linux/probe.sh" ;;
    CYGWIN*|MINGW*|MSYS*)
        cat >&2 <<EOF
Detected Windows shell environment ($(uname -s)).
Run the PowerShell probe directly:
  powershell -NoProfile -File "$here/windows/probe.ps1" $*
EOF
        exit 2 ;;
    *)
        echo "net-ops: unsupported OS '$(uname -s 2>/dev/null)'" >&2
        exit 2 ;;
esac

# Continuous watch mode: re-run every N seconds, but only print on state change.
# A "state" is the (pass_count, fail_count, first_fail) tuple.
if [[ "$watch_interval" -gt 0 ]]; then
    echo "Watching every ${watch_interval}s — prints on state change only. Ctrl-C to stop." >&2
    last_state=""
    while true; do
        # Run in JSON mode to extract summary cleanly; suppress streaming output
        json=$(bash "$target" --json ${clean_args[@]+"${clean_args[@]}"} 2>/dev/null | grep '^{"type":"summary"' | head -1)
        state=$(printf '%s' "$json" | tr -d ' ')
        ts=$(date '+%Y-%m-%d %H:%M:%S')
        if [[ "$state" != "$last_state" ]]; then
            if [[ -z "$last_state" ]]; then
                printf '[%s] initial state: %s\n' "$ts" "$json"
            else
                printf '[%s] CHANGED: %s\n' "$ts" "$json"
            fi
            last_state="$state"
        else
            printf '[%s] (no change)\n' "$ts"
        fi
        sleep "$watch_interval"
    done
fi

# Default: one-shot execution
exec "$target" ${clean_args[@]+"${clean_args[@]}"}