#!/usr/bin/env bash
# box-relay.sh — Lightweight Box Relay Client for Fleet Agent Containers.
#
# Enables fleet agents (646, pip, muse, opm) to access muse-cli level tools,
# spawn subagents, send sidechat DMs, and inspect threads over the secure
# exec-constrained HTTPS relay endpoint.
#
# Supports Bearer Token (EXEC_TOKEN or ~/.exec-token) AND SSH signature auth.
# Endpoint: https://exec.muse-dev.online/exec (or Tailscale https://100.123.153.75:8444/exec)

set -euo pipefail

EXEC_URL="${EXEC_URL:-https://exec.muse-dev.online/exec}"
AGENT="${BOX_AGENT:-${AGENT_NAME:-}}"
TOKEN="${EXEC_TOKEN:-}"

if [ -z "$TOKEN" ] && [ -f "$HOME/.exec-token" ]; then
    TOKEN="$(cat "$HOME/.exec-token" | tr -d '[:space:]')"
fi

# Detect agent identity if not set
if [ -z "$AGENT" ]; then
    if [ -f "$HOME/.agent-name" ]; then
        AGENT="$(cat "$HOME/.agent-name" | tr -d '[:space:]')"
    elif echo "$HOSTNAME" | grep -qi "646"; then
        AGENT="646"
    elif echo "$HOSTNAME" | grep -qi "pip"; then
        AGENT="pip"
    elif echo "$HOSTNAME" | grep -qi "muse"; then
        AGENT="muse"
    elif echo "$HOSTNAME" | grep -qi "opm"; then
        AGENT="opm"
    elif echo "$HOSTNAME" | grep -qi "dev"; then
        AGENT="dev"
    elif echo "$HOSTNAME" | grep -qi "def"; then
        AGENT="def"
    else
        AGENT="646"
    fi
fi

# Helper: POST to exec endpoint
call_exec() {
    local op="$1"
    local args_json="$2"

    if [ -n "$TOKEN" ]; then
        # Bearer token auth
        local body
        body=$(python3 -c "import json, sys; print(json.dumps({'op': sys.argv[1], 'args': json.loads(sys.argv[2])}))" "$op" "$args_json")
        local res
        res=$(curl -sk -sS -X POST "$EXEC_URL" \
            -H "Authorization: Bearer $TOKEN" \
            -H "Content-Type: application/json" \
            -H "User-Agent: Mozilla/5.0 (X11; Linux x86_64) Box-Relay/1.0" \
            --data "$body")
        echo "$res" | python3 -c "
import json, sys
try:
    d = json.load(sys.stdin)
    if 'stdout' in d:
        sys.stdout.write(d['stdout'])
    elif 'error' in d:
        sys.stderr.write('Error: ' + str(d['error']) + '\n')
        sys.exit(1)
    else:
        print(json.dumps(d, indent=2))
except Exception as e:
    print(sys.stdin.read())
"
    else
        # Signature auth fallback
        local key="${SSH_KEY:-$HOME/.ssh/id_frontdoor}"
        if [ ! -f "$key" ] && [ -f "$HOME/.ssh/id_ed25519" ]; then
            key="$HOME/.ssh/id_ed25519"
        fi
        local ident="operator-$AGENT"
        if [ "$AGENT" = "super" ]; then
            ident="super"
        fi
        local ts
        ts=$(date +%s)
        local nonce
        nonce=$(python3 -c "import secrets; print(secrets.token_hex(16))")
        local payload
        payload=$(python3 -c "
import json, sys
op, args_json, ts, nonce = sys.argv[1:5]
args = json.loads(args_json)
print(json.dumps({'op': op, 'args': args, 'ts': int(ts), 'nonce': nonce}))
" "$op" "$args_json" "$ts" "$nonce")
        local sig
        sig=$(printf '%s' "$payload" | ssh-keygen -Y sign -f "$key" -n exec-constrained 2>/dev/null)
        local body
        body=$(python3 -c "
import json, sys
ident, payload, sig = sys.argv[1:4]
print(json.dumps({'identity': ident, 'payload': payload, 'signature': sig}))
" "$ident" "$payload" "$sig")
        local res
        res=$(curl -sk -sS -X POST "$EXEC_URL" \
            -H "Content-Type: application/json" \
            -H "User-Agent: Mozilla/5.0 (X11; Linux x86_64) Box-Relay/1.0" \
            --data "$body")
        echo "$res" | python3 -c "
import json, sys
try:
    d = json.load(sys.stdin)
    if 'stdout' in d:
        sys.stdout.write(d['stdout'])
    elif 'error' in d:
        sys.stderr.write('Error: ' + str(d['error']) + '\n')
        sys.exit(1)
    else:
        print(json.dumps(d, indent=2))
except Exception as e:
    print(sys.stdin.read())
"
    fi
}

cmd="${1:-help}"
shift || true

case "$cmd" in
    subagent)
        sub="${1:-help}"
        shift || true
        case "$sub" in
            spawn)
                title="subagent"
                wait=0
                while [ $# -gt 0 ]; do
                    case "$1" in
                        --title) title="$2"; shift 2 ;;
                        --wait) wait="$2"; shift 2 ;;
                        --agent) AGENT="$2"; shift 2 ;;
                        *) break ;;
                    esac
                done
                prompt="${1:?usage: box subagent spawn [--title <title>] [--wait <seconds>] <prompt>}"
                args=$(python3 -c "import json, sys; print(json.dumps({'agent': sys.argv[1], 'title': sys.argv[2], 'prompt': sys.argv[3], 'wait': int(sys.argv[4])}))" "$AGENT" "$title" "$prompt" "$wait")
                call_exec "subagent.spawn" "$args"
                ;;
            *)
                echo "Usage: box subagent spawn [--title <title>] [--wait <seconds>] <prompt>"
                ;;
        esac
        ;;
    deploy)
        sub="${1:-help}"
        shift || true
        case "$sub" in
            subagent)
                title="subagent"
                wait=0
                while [ $# -gt 0 ]; do
                    case "$1" in
                        --title) title="$2"; shift 2 ;;
                        --wait) wait="$2"; shift 2 ;;
                        --agent) AGENT="$2"; shift 2 ;;
                        *) break ;;
                    esac
                done
                prompt="${1:?usage: box deploy subagent [--title <title>] [--wait <seconds>] <prompt>}"
                args=$(python3 -c "import json, sys; print(json.dumps({'agent': sys.argv[1], 'title': sys.argv[2], 'prompt': sys.argv[3], 'wait': int(sys.argv[4])}))" "$AGENT" "$title" "$prompt" "$wait")
                call_exec "subagent.spawn" "$args"
                ;;
            pipeline)
                name="${1:?usage: box deploy pipeline <name>}"
                args=$(python3 -c "import json, sys; print(json.dumps({'name': sys.argv[1]}))" "$name")
                call_exec "pipeline.run" "$args"
                ;;
            *)
                echo "Usage: box deploy subagent|pipeline ..."
                ;;
        esac
        ;;
    dm)
        sub="${1:-help}"
        shift || true
        case "$sub" in
            send)
                to=""
                target=""
                from_agent="$AGENT"
                while [ $# -gt 0 ]; do
                    case "$1" in
                        --to) to="$2"; shift 2 ;;
                        --target) target="$2"; shift 2 ;;
                        --agent|--from) from_agent="$2"; shift 2 ;;
                        *) break ;;
                    esac
                done
                msg="${1:?usage: box dm send --to <agent> [--target <target>] <message>}"
                to="${to:-$AGENT}"
                target="${target:-$AGENT-pip}"
                args=$(python3 -c "import json, sys; print(json.dumps({'agent': sys.argv[1], 'to': sys.argv[2], 'target': sys.argv[3], 'message': sys.argv[4]}))" "$from_agent" "$to" "$target" "$msg")
                call_exec "dm.send" "$args"
                ;;
            read)
                target="${1:-main}"
                limit="${2:-10}"
                args=$(python3 -c "import json, sys; print(json.dumps({'agent': sys.argv[1], 'target': sys.argv[2], 'limit': int(sys.argv[3])}))" "$AGENT" "$target" "$limit")
                call_exec "dm.read" "$args"
                ;;
            *)
                echo "Usage: box dm send|read ..."
                ;;
        esac
        ;;
    thread)
        sub="${1:-list}"
        shift || true
        case "$sub" in
            list)
                target_agent="${1:-$AGENT}"
                args=$(python3 -c "import json, sys; print(json.dumps({'agent': sys.argv[1]}))" "$target_agent")
                call_exec "thread.list" "$args"
                ;;
            view)
                target_agent="$AGENT"
                while [ $# -gt 0 ]; do
                    case "$1" in
                        --agent) target_agent="$2"; shift 2 ;;
                        *) break ;;
                    esac
                done
                if [ $# -ge 2 ] && echo " 646 opm pip muse dev def " | grep -q " $1 "; then
                    target_agent="$1"
                    shift
                fi
                thread_id="${1:?usage: box thread view [<agent>] <thread_id> [limit]}"
                limit="${2:-15}"
                args=$(python3 -c "import json, sys; print(json.dumps({'agent': sys.argv[1], 'thread': sys.argv[2], 'limit': int(sys.argv[3])}))" "$target_agent" "$thread_id" "$limit")
                call_exec "thread.view" "$args"
                ;;
            *)
                echo "Usage: box thread list|view ..."
                ;;
        esac
        ;;
    health)
        call_exec "health.check" "{}"
        ;;
    ping)
        call_exec "exec.ping" "{}"
        ;;
    ops)
        curl -sk -sS "${EXEC_URL%/exec}/ops" | python3 -m json.tool
        ;;
    help|--help|-h)
        cat <<EOF
Box Relay Client — Agent CLI for autonomous coordination

Usage:
  box subagent spawn [--title <title>] [--wait <s=0>] <prompt>
  box deploy subagent [--title <title>] [--wait <s=0>] <prompt>
  box deploy pipeline <name>
  box dm send --to <agent> [--target <target>] <message>
  box dm read [<target=main>] [<limit=10>]
  box thread list [<agent>]
  box thread view <thread_id> [<limit=15>]
  box health
  box ping
  box ops

Configuration:
  EXEC_URL    Endpoint (default: https://exec.muse-dev.online/exec)
  EXEC_TOKEN  Bearer token (or store in ~/.exec-token)
  BOX_AGENT   Agent identity (646, pip, muse, opm)
EOF
        ;;
    *)
        echo "Unknown command: $cmd (run 'box help')"
        exit 1
        ;;
esac