#!/usr/bin/env bash
# ccstatusline-config installer
# 어느 머신에서든 한 줄로 설치:
#   git clone https://git.scrutineer.co.kr/zaksal58/ccstatusline-config.git && cd ccstatusline-config && ./install.sh
#
# 또는 원격 설치:
#   curl -sSL https://git.scrutineer.co.kr/zaksal58/ccstatusline-config/raw/branch/main/install.sh | bash

set -euo pipefail

REPO_URL="https://git.scrutineer.co.kr/zaksal58/ccstatusline-config.git"
CLAUDE_DIR="${HOME}/.claude"
STATUSLINE_SCRIPT="${CLAUDE_DIR}/statusline.sh"
SETTINGS_FILE="${CLAUDE_DIR}/settings.json"

# --- Colors ---
RED=$'\033[91m'
GREEN=$'\033[92m'
YELLOW=$'\033[93m'
CYAN=$'\033[96m'
BOLD=$'\033[1m'
RESET=$'\033[0m'

info()  { echo "${CYAN}[INFO]${RESET} $*"; }
ok()    { echo "${GREEN}[OK]${RESET} $*"; }
warn()  { echo "${YELLOW}[WARN]${RESET} $*"; }
err()   { echo "${RED}[ERROR]${RESET} $*" >&2; }

# --- Dependency check ---
check_deps() {
    local missing=()
    for cmd in jq git; do
        if ! command -v "$cmd" >/dev/null 2>&1; then
            missing+=("$cmd")
        fi
    done
    if [ ${#missing[@]} -gt 0 ]; then
        err "필수 의존성이 없습니다: ${missing[*]}"
        err "설치 후 다시 실행해주세요."
        exit 1
    fi
}

# --- Determine script source directory ---
get_script_dir() {
    # If run from a cloned repo, use local files
    local dir
    dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
    if [ -f "${dir}/statusline.sh" ]; then
        echo "$dir"
        return
    fi
    # If run via curl pipe, clone to temp dir
    local tmpdir
    tmpdir=$(mktemp -d)
    info "저장소 클론 중..."
    git clone --depth 1 "$REPO_URL" "$tmpdir" >/dev/null 2>&1
    echo "$tmpdir"
}

# --- Install statusline script ---
install_statusline() {
    local src_dir="$1"

    mkdir -p "$CLAUDE_DIR"

    # Backup existing statusline if different
    if [ -f "$STATUSLINE_SCRIPT" ]; then
        if ! diff -q "${src_dir}/statusline.sh" "$STATUSLINE_SCRIPT" >/dev/null 2>&1; then
            local backup="${STATUSLINE_SCRIPT}.bak.$(date +%Y%m%d%H%M%S)"
            cp "$STATUSLINE_SCRIPT" "$backup"
            warn "기존 statusline.sh 백업: ${backup}"
        fi
    fi

    cp "${src_dir}/statusline.sh" "$STATUSLINE_SCRIPT"
    chmod +x "$STATUSLINE_SCRIPT"
    ok "statusline.sh 설치 완료: ${STATUSLINE_SCRIPT}"
}

# --- Update settings.json ---
update_settings() {
    local statusline_entry
    statusline_entry=$(cat <<JSONEOF
{
    "type": "command",
    "command": "${STATUSLINE_SCRIPT}",
    "padding": 0
}
JSONEOF
)

    if [ ! -f "$SETTINGS_FILE" ]; then
        # Create new settings.json with statusLine
        cat > "$SETTINGS_FILE" <<JSONEOF
{
  "statusLine": {
    "type": "command",
    "command": "${STATUSLINE_SCRIPT}",
    "padding": 0
  }
}
JSONEOF
        ok "settings.json 생성 완료 (statusLine 설정 포함)"
        return
    fi

    # Check if statusLine is already configured
    local existing
    existing=$(jq -r '.statusLine.command // ""' "$SETTINGS_FILE" 2>/dev/null || echo "")

    if [ "$existing" = "$STATUSLINE_SCRIPT" ]; then
        ok "settings.json에 statusLine이 이미 올바르게 설정되어 있습니다."
        return
    fi

    # Update or add statusLine entry
    local tmpfile
    tmpfile=$(mktemp)
    jq --arg cmd "$STATUSLINE_SCRIPT" '.statusLine = {"type": "command", "command": $cmd, "padding": 0}' "$SETTINGS_FILE" > "$tmpfile"
    mv "$tmpfile" "$SETTINGS_FILE"
    ok "settings.json 업데이트 완료 (statusLine 경로: ${STATUSLINE_SCRIPT})"
}

# --- Main ---
main() {
    echo ""
    echo "${BOLD}${CYAN}╔══════════════════════════════════════╗${RESET}"
    echo "${BOLD}${CYAN}║  Claude Code Statusline Installer    ║${RESET}"
    echo "${BOLD}${CYAN}╚══════════════════════════════════════╝${RESET}"
    echo ""

    check_deps

    local src_dir
    src_dir=$(get_script_dir)

    install_statusline "$src_dir"
    update_settings

    echo ""
    echo "${GREEN}${BOLD}설치 완료!${RESET}"
    echo ""
    echo "  Claude Code를 다시 시작하면 새 statusline이 적용됩니다."
    echo ""
    echo "  업데이트하려면:"
    echo "    ${CYAN}cd ${src_dir} && git pull && ./install.sh${RESET}"
    echo ""
}

main "$@"