#!/usr/bin/env bash
# claude-profile — Launch Claude Code with a named config profile
# Profiles are directories matching ~/.claude-*/
# Usage:
#   claude-profile              # interactive menu
#   claude-profile <name>       # direct launch (e.g. claude-profile work)

set -euo pipefail

DEFAULT_DIR="$HOME/.claude"
PROFILE_PATTERN="$HOME/.claude-*"

# Emit a WezTerm user-var escape sequence to trigger profile-based theming.
# WezTerm decodes the base64 value and fires a 'user-var-changed' event.
# Safe to call in non-WezTerm terminals — the escape sequence is silently ignored.
set_wezterm_profile() {
    local profile_name="$1"
    printf '\e]1337;SetUserVar=%s=%s\a' CLAUDE_PROFILE "$(printf '%s' "$profile_name" | base64)"
}

# Reset WezTerm theme when the script exits (e.g., Claude session ends)
reset_wezterm_profile() {
    printf '\e]1337;SetUserVar=%s=%s\a' CLAUDE_PROFILE "$(printf '%s' '_reset' | base64)"
}
trap reset_wezterm_profile EXIT

# Sync all repos before starting a session
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
SYNC_SCRIPT="${SCRIPT_DIR}/sync-repos"
if [[ -x "$SYNC_SCRIPT" ]]; then
    echo "Syncing repos..."
    "$SYNC_SCRIPT" || echo "Warning: some repos failed to sync (continuing anyway)"
    echo ""
fi

# Gather profiles
profiles=()
for dir in $PROFILE_PATTERN; do
    [[ -d "$dir" ]] || continue
    name="${dir##*/.claude-}"
    profiles+=("$name")
done

# Direct invocation with a profile name
if [[ ${1:-} ]]; then
    target="$HOME/.claude-$1"
    if [[ -d "$target" ]]; then
        export CLAUDE_CONFIG_DIR="$target"
        set_wezterm_profile "$1"
        echo "Using profile: $1 ($target)"
        claude "${@:2}"
        exit $?
    else
        echo "Profile '$1' not found. Create it with: mkdir -p $target" >&2
        exit 1
    fi
fi

# Build menu
echo "Claude Code profiles:"
echo ""
i=1
echo "  $i) default (~/.claude)"
options=("default")
for name in "${profiles[@]}"; do
    ((i++))
    echo "  $i) $name (~/.claude-$name)"
    options+=("$name")
done

echo ""
read -rp "Choose profile [1]: " choice
choice="${choice:-1}"

# Validate choice
if ! [[ "$choice" =~ ^[0-9]+$ ]] || (( choice < 1 || choice > ${#options[@]} )); then
    echo "Invalid choice." >&2
    exit 1
fi

selected="${options[$((choice - 1))]}"

if [[ "$selected" == "default" ]]; then
    echo "Using default profile ($DEFAULT_DIR)"
    export CLAUDE_CONFIG_DIR="$DEFAULT_DIR"
    set_wezterm_profile "default"
else
    target="$HOME/.claude-$selected"
    echo "Using profile: $selected ($target)"
    export CLAUDE_CONFIG_DIR="$target"
    set_wezterm_profile "$selected"
fi

# Load the context
CONTEXT_LOADER="${SCRIPT_DIR}/context-load"

if [[ ! -x "$CONTEXT_LOADER" ]]; then
    echo "Error: context-load not found at $CONTEXT_LOADER" >&2
    exit 1
fi

context="$("$CONTEXT_LOADER")"

if [[ -n "$context" ]]; then
    claude --append-system-prompt "$context" "$@"
else
    claude "$@"
fi