#!/bin/sh
set -eu

root=$(CDPATH= cd -- "$(dirname -- "$0")/.." && pwd)
PYTHONPATH="$root/src${PYTHONPATH:+:$PYTHONPATH}"
export PYTHONPATH
PYTHONUNBUFFERED="${PYTHONUNBUFFERED:-1}"
export PYTHONUNBUFFERED

if [ -n "${SAILFISH_DEVEL_MCP_LOG_DIR:-}" ]; then
    log_dir=$SAILFISH_DEVEL_MCP_LOG_DIR
elif [ -n "${XDG_STATE_HOME:-}" ]; then
    log_dir=$XDG_STATE_HOME/sailfish-devel-mcp
elif [ -n "${HOME:-}" ]; then
    log_dir=$HOME/.local/state/sailfish-devel-mcp
else
    log_dir=/tmp/sailfish-devel-mcp
fi

log_file=$log_dir/server.log
if mkdir -p "$log_dir" 2>/dev/null && touch "$log_file" 2>/dev/null; then
    {
        log_line() {
            printf '[%s] %s\n' "$(date -Is)" "$*" >&2
        }

        log_exit_once() {
            status=$1
            if [ "$exit_logged" -eq 0 ]; then
                log_line "sailfish-devel-mcp exited status=$status"
                exit_logged=1
            fi
        }

        on_signal() {
            signal=$1
            log_line "sailfish-devel-mcp wrapper received signal=$signal"
            if [ -n "$child_pid" ]; then
                kill "-$signal" "$child_pid" 2>/dev/null || true
                wait "$child_pid"
                status=$?
            else
                status=128
            fi
            log_exit_once "$status"
            exit "$status"
        }

        child_pid=
        exit_logged=0

        trap 'on_signal HUP' HUP
        trap 'on_signal INT' INT
        trap 'on_signal QUIT' QUIT
        trap 'on_signal TERM' TERM
        trap 'status=$?; log_exit_once "$status"' EXIT

        printf '\n' >&2
        printf '[%s] starting sailfish-devel-mcp wrapper_pid=%s parent_pid=%s' \
            "$(date -Is)" "$$" "${PPID:-unknown}" >&2
        if [ "$#" -gt 0 ]; then
            printf ' argv=' >&2
            for arg do
                printf ' %s' "$arg" >&2
            done
        fi
        printf '\n' >&2

        exec 3<&0
        set +e
        python3 -m sailfish_devel_mcp "$@" <&3 &
        child_pid=$!
        log_line "sailfish-devel-mcp python_pid=$child_pid"
        wait "$child_pid"
        status=$?
        exec 3<&-
        child_pid=
        set -e
        log_exit_once "$status"
        exit "$status"
    } 2>>"$log_file"
fi

exec python3 -m sailfish_devel_mcp "$@"