#!/usr/bin/env bash
# br-live - Live BR Visual Language Display
# Real-time status with semantic color flows

set -euo pipefail

# BR Semantic Colors
BR_PERCEPTION='\033[38;5;28m'   # PERCEPTION: VALID_INPUT
BR_EXEC='\033[38;5;64m'         # EXECUTION: EXEC_HIGH
BR_MEMORY='\033[38;5;100m'      # MEMORY: MEM_PERSIST
BR_AGENT='\033[38;5;136m'       # AUTONOMY: AGENT_EXEC
BR_WARN='\033[38;5;178m'        # TENSION: WARN_DRIFT
BR_SUCCESS='\033[38;5;2m'       # OS_LAYER: SUCCESS
BR_META='\033[38;5;244m'        # META: escape

# BR Shapes
SHAPE_INPUT="▓"
SHAPE_EXEC="▶"
SHAPE_MEMORY="●"
SHAPE_AGENT="◆"
SHAPE_WARN="▲"
SHAPE_SUCCESS="✓"

RESET='\033[0m'
BOLD='\033[1m'
CLEAR='\033[2J\033[H'

print_header() {
    echo -e "${CLEAR}"
    echo -e "${BR_EXEC}${BOLD}═══════════════════════════════════════════════════════════════${RESET}"
    echo -e "${BR_EXEC}${BOLD}  BR-LIVE — Visual Language Real-Time Monitor${RESET}"
    echo -e "${BR_EXEC}${BOLD}═══════════════════════════════════════════════════════════════${RESET}"
    echo ""
}

render_pipeline() {
    local status="$1"
    echo -e "  ${BR_PERCEPTION}${SHAPE_INPUT}${RESET} → ${BR_EXEC}${SHAPE_EXEC}${RESET} → ${BR_MEMORY}${SHAPE_MEMORY}${RESET} → ${status}"
}

show_system_flow() {
    echo -e "${BOLD}System Flow (Last 60s)${RESET}\n"
    
    # Simulated live flows
    echo -e "  Request Pipeline:"
    render_pipeline "${BR_SUCCESS}${SHAPE_SUCCESS}${RESET} success"
    echo ""
    
    echo -e "  Agent Activity:"
    echo -e "    ${BR_AGENT}${SHAPE_AGENT}${RESET} planner    ${BR_META}→${RESET} ${BR_EXEC}${SHAPE_EXEC}${RESET} executing"
    echo -e "    ${BR_AGENT}${SHAPE_AGENT}${RESET} analyst   ${BR_META}→${RESET} ${BR_MEMORY}${SHAPE_MEMORY}${RESET} caching"
    echo -e "    ${BR_AGENT}${SHAPE_AGENT}${RESET} executor  ${BR_META}→${RESET} ${BR_SUCCESS}${SHAPE_SUCCESS}${RESET} complete"
    echo ""
    
    echo -e "  System Status:"
    echo -e "    ${BR_MEMORY}${SHAPE_MEMORY}${RESET} Memory:    ${BR_SUCCESS}OK${RESET} (42% used)"
    echo -e "    ${BR_EXEC}${SHAPE_EXEC}${RESET} Execution: ${BR_SUCCESS}OK${RESET} (7 active)"
    echo -e "    ${BR_AGENT}${SHAPE_AGENT}${RESET} Agents:    ${BR_SUCCESS}OK${RESET} (12/30k active)"
    echo ""
}

show_agent_states() {
    echo -e "${BOLD}Agent States${RESET}\n"
    
    local agents=(
        "api:$BR_PERCEPTION:$SHAPE_INPUT:listening"
        "executor:$BR_EXEC:$SHAPE_EXEC:active"
        "memory:$BR_MEMORY:$SHAPE_MEMORY:caching"
        "planner:$BR_AGENT:$SHAPE_AGENT:thinking"
        "sentinel:$BR_WARN:$SHAPE_WARN:monitoring"
        "validator:$BR_PERCEPTION:$SHAPE_INPUT:checking"
    )
    
    for agent_spec in "${agents[@]}"; do
        IFS=':' read -r name color shape state <<< "$agent_spec"
        printf "  ${color}${shape}${RESET} %-12s %s\n" "$name" "$state"
    done
    echo ""
}

show_color_legend() {
    echo -e "${BR_META}${BOLD}BR Color Grammar${RESET}\n"
    echo -e "  ${BR_PERCEPTION}${SHAPE_INPUT}${RESET} Perception  ${BR_EXEC}${SHAPE_EXEC}${RESET} Execution  ${BR_MEMORY}${SHAPE_MEMORY}${RESET} Memory"
    echo -e "  ${BR_AGENT}${SHAPE_AGENT}${RESET} Autonomy    ${BR_WARN}${SHAPE_WARN}${RESET} Tension    ${BR_SUCCESS}${SHAPE_SUCCESS}${RESET} Success"
    echo ""
}

live_monitor() {
    while true; do
        print_header
        show_system_flow
        show_agent_states
        show_color_legend
        
        echo -e "${BR_META}═══════════════════════════════════════════════════════════════${RESET}"
        echo -e "${BR_META}  Press Ctrl+C to exit | Refreshing every 2s${RESET}"
        
        sleep 2
    done
}

# Mode selection
case "${1:-live}" in
    live)
        live_monitor
        ;;
    once)
        print_header
        show_system_flow
        show_agent_states
        show_color_legend
        ;;
    *)
        echo "Usage: br-live [live|once]"
        echo "  live - continuous monitoring (default)"
        echo "  once - single snapshot"
        exit 1
        ;;
esac