#!/usr/bin/env bash
# KeiSeiKit — Constructor-Pattern Agent Kit installer
# Idempotent: safe to re-run. Never overwrites settings.json or existing user manifests.
#
# Usage:
#   ./install.sh                           # interactive menu on TTY; profile=minimal on non-TTY
#   ./install.sh --profile=<name>          # minimal|core|frontend|ops|dev|mcp|full  (skips menu)
#   ./install.sh --add=<name>[,<name>]     # install one or more primitives on top of current state
#   ./install.sh --remove=<name>           # remove a single primitive
#   ./install.sh --list                    # list installed primitives (name | kind | desc | path)
#   ./install.sh --with-bridges            # also render cross-tool bridges into $PWD
#   ./install.sh --activate-hooks          # jq-merge settings-snippet.json into ~/.claude/settings.json
#   ./install.sh --yes                     # skip confirm screen after menu (automation)
#   ./install.sh --no-execute              # parse menu+confirm, print plan, exit (testing)
#
# Internals: this file is a thin orchestrator. All implementation lives in
# install/lib-*.sh cubes (Constructor Pattern: 1 file = 1 concern, <200 LOC).

set -euo pipefail

# --- paths ----------------------------------------------------------------
KIT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
HOME_DIR="${HOME:?HOME not set}"
AGENTS_DIR="$HOME_DIR/.claude/agents"
HOOKS_DIR="$HOME_DIR/.claude/hooks"
SKILLS_DIR="$HOME_DIR/.claude/skills"
MANIFEST="$KIT_DIR/_primitives/MANIFEST.toml"
INSTALLED_FILE="$AGENTS_DIR/_primitives/.installed"
LIB_DIR="$KIT_DIR/install"

# --- source cubes (order matters: logs -> backup -> profile -> rest) ------
# shellcheck source=install/lib-log.sh
source "$LIB_DIR/lib-log.sh"
# shellcheck source=install/lib-backup.sh
source "$LIB_DIR/lib-backup.sh"
# shellcheck source=install/lib-profile.sh
source "$LIB_DIR/lib-profile.sh"
# shellcheck source=install/lib-args.sh
source "$LIB_DIR/lib-args.sh"
# shellcheck source=install/lib-menu.sh
source "$LIB_DIR/lib-menu.sh"
# shellcheck source=install/lib-plan.sh
source "$LIB_DIR/lib-plan.sh"
# shellcheck source=install/lib-prereqs.sh
source "$LIB_DIR/lib-prereqs.sh"
# shellcheck source=install/lib-primitives.sh
source "$LIB_DIR/lib-primitives.sh"
# shellcheck source=install/lib-rust.sh
source "$LIB_DIR/lib-rust.sh"
# shellcheck source=install/lib-scaffold.sh
source "$LIB_DIR/lib-scaffold.sh"
# shellcheck source=install/lib-bridges.sh
source "$LIB_DIR/lib-bridges.sh"
# shellcheck source=install/lib-hooks.sh
source "$LIB_DIR/lib-hooks.sh"
# shellcheck source=install/lib-agents.sh
source "$LIB_DIR/lib-agents.sh"
# shellcheck source=install/lib-skills.sh
source "$LIB_DIR/lib-skills.sh"
# shellcheck source=install/lib-wizard.sh
source "$LIB_DIR/lib-wizard.sh"
# shellcheck source=install/lib-summary.sh
source "$LIB_DIR/lib-summary.sh"

# --- parse flags + install rollback trap ---------------------------------
parse_args "$@"
setup_backup_trap

# --- --list short-circuit -------------------------------------------------
if [ "$LIST_MODE" = "1" ]; then
  [ -f "$MANIFEST" ] || { err "MANIFEST.toml missing: $MANIFEST"; exit 2; }
  cmd_list
  exit 0
fi

# --- incremental --add / --remove short-circuit --------------------------
if [ -n "$ADD_LIST" ] || [ -n "$REMOVE_NAME" ]; then
  run_incremental_change
  exit 0
fi

# --- interactive menu (option C hybrid) ----------------------------------
# Runs ONLY when: no selection flag passed AND stdin+stdout are TTY AND
# --list / --add / --remove short-circuits above did NOT fire.
run_menu_if_needed || exit 1

# --- resolve profile (default=minimal) -----------------------------------
PROFILE="${PROFILE:-minimal}"
case "$PROFILE" in
  minimal|core|frontend|ops|dev|mcp|full|custom) ;;
  *)
    err "unknown profile: $PROFILE. Valid: minimal | core | frontend | ops | dev | mcp | full"
    exit 1
    ;;
esac
say "profile: $PROFILE"

# --- prerequisites -------------------------------------------------------
check_prereqs

# --- confirm screen + --no-execute ---------------------------------------
CONFIRM_LABEL="$PROFILE"
[ "$PROFILE" = "custom" ] && CONFIRM_LABEL="custom ($CUSTOM_PRIMS)"
CONFIRM_INPUT="$(printf '%s\n' $PROFILE_PRIMS | grep -v '^$' || true)"
if ! printf '%s\n' "$CONFIRM_INPUT" | show_confirm_screen "$CONFIRM_LABEL"; then
  say "install declined at confirm screen — aborting"
  exit 1
fi

if [ "$NO_EXECUTE" = "1" ]; then
  say "--no-execute: plan resolved, exiting before install"
  exit 0
fi

# --- execute install phases ----------------------------------------------
setup_target_dirs
scaffold_memory_index
install_blocks
run_primitives_phase
install_bridges
install_manifests
build_assembler
generate_agents
install_hooks
install_skills
maybe_activate_hooks

# Bail out cleanly if the rollback trap already fired (activate_hooks err path).
if [ "${ROLLED_BACK:-0}" = "1" ]; then
  exit 2
fi

# --- optional post-install hooks ------------------------------------------
[ "$WITH_BRIDGES"    = "1" ] && render_bridges
[ "$WITH_SLEEP_SYNC" = "1" ] && run_sleep_wizard

# --- final summary --------------------------------------------------------
print_summary