#!/usr/bin/env bash
# Launch an interactive (TUI) Mosaic agent in its container.
#
# Usage:
#   scripts/agent.sh <name> [--mission <file>] [--workspace <ws>]
#                    [--session <name>] [--tools <comma,list>]
#
# The agent receives the four immutable contracts (constitution, standards,
# SOUL, USER) plus its own identity and optional mission directives as its
# system prompt, a persistent named session, and - if declared - a
# workspace and tool capabilities. The TUI opens clean; you drive.
#
# This is the Mosaic alternative to launching vanilla pi: same engine,
# governed context.
set -euo pipefail
cd "$(dirname "$0")/.."
# shellcheck source=common.sh
source scripts/common.sh

NAME=""
MISSION=""
WORKSPACE=""
SESSION=""
TOOLS=""

while [ $# -gt 0 ]; do
    case "$1" in
        --mission)   MISSION="${2:?}"; shift 2 ;;
        --workspace) WORKSPACE="${2:?}"; shift 2 ;;
        --session)   SESSION="${2:?}"; shift 2 ;;
        --tools)     TOOLS="${2:?}"; shift 2 ;;
        --help|-h)   sed -n '2,12p' "$0"; exit 0 ;;
        *)           NAME="$1"; shift ;;
    esac
done

[ -n "$NAME" ] || { echo "agent: usage: scripts/agent.sh <name> [--mission f] [--workspace ws] [--session s] [--tools list]" >&2; exit 4; }
case "$NAME" in *[!A-Za-z0-9._-]*|'') echo "agent: invalid agent name" >&2; exit 4;; esac

load_config
load_release
bootstrap_runtime_dir

SESSION="${SESSION:-agent-$NAME}"
mkdir -p "$MOSAIC_DEV_DIR/sessions/$SESSION"
export MOSAIC_SESSION_DIR="/var/lib/mosaic/sessions/$SESSION"
export MOSAIC_AGENT_NAME="$NAME"
export MOSAIC_INTERACTIVE=1
export MOSAIC_TOOLS="${TOOLS:+$TOOLS}"

if [ -n "$MISSION" ]; then
    [ -r "$MISSION" ] || { echo "agent: mission file not readable: $MISSION" >&2; exit 4; }
    mkdir -p "$MOSAIC_DEV_DIR/agent-missions"
    cp "$MISSION" "$MOSAIC_DEV_DIR/agent-missions/$NAME.json"
    export MOSAIC_MISSION_FILE="/var/lib/mosaic/agent-missions/$NAME.json"
fi

if [ -n "$WORKSPACE" ]; then
    case "$WORKSPACE" in *[!A-Za-z0-9._-]*|'') echo "agent: invalid workspace name" >&2; exit 4;; esac
    mkdir -p "$MOSAIC_DEV_DIR/workspaces/$WORKSPACE"
    export MOSAIC_WORKSPACE="/var/lib/mosaic/workspaces/$WORKSPACE"
fi

echo "agent: launching TUI agent '$NAME' (session: $SESSION, adapter: $MOSAIC_ADAPTER, model: $MOSAIC_MODEL)"
echo "agent: contracts + $([ -n "$MISSION" ] && echo 'mission' || echo 'no mission') loaded; exit the TUI with /quit"
# No -T: the TTY is the point. Ctrl+C twice or /quit exits.
exec docker compose run --rm mosaic-agent