#!/bin/bash
# =============================================================================
# opencode-start.sh — Start OpenCode with or without oh-my-openagent
# =============================================================================
#
# PURPOSE:
#   Wrapper script that starts the OpenCode server. If a state file exists
#   at ~/.config/opencode/omoa-enabled, the oh-my-openagent plugin is injected
#   at runtime via OPENCODE_CONFIG_CONTENT. Otherwise, OpenCode starts vanilla.
#
# HOW IT WORKS:
#   - Checks for state file: ~/.config/opencode/omoa-enabled
#   - If state file exists:
#     - Reads opencode.json
#     - Uses python3 to add oh-my-openagent@latest to the plugin array
#     - Sets OPENCODE_CONFIG_CONTENT with the modified JSON
#     - OPENCODE_CONFIG_CONTENT has higher precedence than the config file
#   - If state file does not exist:
#     - Starts OpenCode with the clean config file (no omoa)
#   - No files are mutated — the base opencode.json stays clean
#
# STATE FILE:
#   ~/.config/opencode/omoa-enabled
#   - If this file exists, omoa is enabled
#   - If this file does not exist, omoa is disabled
#   - Created/deleted by the omoa_toggle Telegram skill
#
# USAGE:
#   opencode-start          — Start without omoa (vanilla)
#   opencode-start --omoa   — Start with omoa enabled
#
# SYSTEMD INTEGRATION:
#   This script is used as the ExecStart command in the opencode-serve.service.
#   The systemd service runs this in the background.
#
# UPSTREAM REPO:
#   https://git.hibbhome.com/Hibbhome/opencode-omoa-toggle
#
# CREATED: 2026-05-03
# =============================================================================

CONFIG_FILE="$HOME/.config/opencode/opencode.json"
OPENCODE_BIN="$HOME/.opencode/bin/opencode"
STATE_FILE="$HOME/.config/opencode/omoa-enabled"
PORT=4096

# Check if omoa should be enabled
# Either via state file or --omoa flag
ENABLE_OMOA=false

if [ -f "$STATE_FILE" ]; then
  ENABLE_OMOA=true
fi

if [[ "$*" == *"--omoa"* ]]; then
  ENABLE_OMOA=true
fi

if [ "$ENABLE_OMOA" = true ]; then
  # Inject oh-my-openagent plugin at runtime using python3
  MODIFIED_CONFIG=$(python3 -c "
import json
import sys

with open('$CONFIG_FILE', 'r') as f:
    config = json.load(f)

# Ensure plugin array exists
if 'plugin' not in config:
    config['plugin'] = []

# Add oh-my-openagent if not already present
if not any('oh-my-openagent' in p for p in config['plugin']):
    config['plugin'].append('oh-my-openagent@latest')

print(json.dumps(config))
")

  if [ $? -ne 0 ]; then
    echo "ERROR: Failed to process config with python3"
    exit 1
  fi

  echo "Starting OpenCode WITH oh-my-openagent..."
  OPENCODE_CONFIG_CONTENT="$MODIFIED_CONFIG" exec "$OPENCODE_BIN" serve --port "$PORT"
else
  echo "Starting OpenCode (vanilla)..."
  exec "$OPENCODE_BIN" serve --port "$PORT"
fi