#!/usr/bin/env bash
# Deploy a skill from this repo to dotfiles for system-wide availability

set -euo pipefail

SKILLS_REPO="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
DOTFILES_REPO="$HOME/proj/dotfiles"
SKILL_NAME="${1:-}"

usage() {
    cat <<EOF
Usage: $0 <skill-name>

Deploy a skill from ~/proj/skills to ~/proj/dotfiles for system-wide deployment.

Arguments:
    skill-name    Name of skill directory in skills/

Examples:
    $0 screenshot-latest
    $0 niri-window-capture

This script:
1. Copies skill to dotfiles/claude/skills/
2. Shows you the Nix config to add
3. Reminds you to rebuild

You must manually:
- Edit home/claude.nix
- Edit home/opencode.nix  
- Run: sudo nixos-rebuild switch --flake .#delpad
- Restart AI agents

Available skills:
EOF
    ls -1 "$SKILLS_REPO/skills" | grep -v template | sed 's/^/    /'
    exit 1
}

if [[ -z "$SKILL_NAME" ]]; then
    usage
fi

SKILL_SOURCE="$SKILLS_REPO/skills/$SKILL_NAME"
SKILL_DEST="$DOTFILES_REPO/claude/skills/$SKILL_NAME"

# Validate skill exists
if [[ ! -d "$SKILL_SOURCE" ]]; then
    echo "Error: Skill not found: $SKILL_SOURCE" >&2
    echo "" >&2
    usage
fi

# Validate dotfiles repo exists
if [[ ! -d "$DOTFILES_REPO" ]]; then
    echo "Error: Dotfiles repo not found: $DOTFILES_REPO" >&2
    exit 1
fi

# Check if skill has SKILL.md
if [[ ! -f "$SKILL_SOURCE/SKILL.md" ]]; then
    echo "Error: $SKILL_NAME missing SKILL.md" >&2
    exit 1
fi

# Check if already deployed
if [[ -d "$SKILL_DEST" ]]; then
    echo "⚠️  Skill already deployed: $SKILL_DEST"
    read -p "Overwrite? [y/N] " -n 1 -r
    echo
    if [[ ! $REPLY =~ ^[Yy]$ ]]; then
        echo "Cancelled"
        exit 1
    fi
    rm -rf "$SKILL_DEST"
fi

# Check for security docs
SECURITY_WARNING=""
if [[ -f "$SKILL_SOURCE/SECURITY.md" ]]; then
    SECURITY_WARNING="
⚠️  ⚠️  ⚠️  SECURITY WARNING ⚠️  ⚠️  ⚠️

This skill has security documentation.
READ BEFORE DEPLOYING: $SKILL_DEST/SECURITY.md

Security-sensitive skills should only be deployed after:
1. Reviewing security documentation
2. Understanding risks and mitigations
3. Configuring protection mechanisms
"
fi

echo "Deploying skill: $SKILL_NAME"
echo ""
echo "Source: $SKILL_SOURCE"
echo "Dest:   $SKILL_DEST"
echo ""

# Copy skill
mkdir -p "$(dirname "$SKILL_DEST")"
cp -r "$SKILL_SOURCE" "$SKILL_DEST"

echo "✓ Skill copied to dotfiles"
echo ""

if [[ -n "$SECURITY_WARNING" ]]; then
    echo "$SECURITY_WARNING"
fi

echo "Next steps:"
echo ""
echo "1. Add to Claude Code (edit $DOTFILES_REPO/home/claude.nix):"
echo ""
echo "   home.file.\".claude/skills/$SKILL_NAME\" = {"
echo "     source = ../claude/skills/$SKILL_NAME;"
echo "     recursive = true;"
echo "   };"
echo ""
echo "2. Add to OpenCode (edit $DOTFILES_REPO/home/opencode.nix):"
echo ""
echo "   home.file.\".config/opencode/skills/$SKILL_NAME\" = {"
echo "     source = ../claude/skills/$SKILL_NAME;"
echo "     recursive = true;"
echo "   };"
echo ""
echo "3. Rebuild system:"
echo ""
echo "   cd $DOTFILES_REPO"
echo "   sudo nixos-rebuild switch --flake .#delpad"
echo ""
echo "4. Restart AI agents (OpenCode and Claude Code)"
echo ""

if [[ -n "$SECURITY_WARNING" ]]; then
    echo "⚠️  REMEMBER: Review SECURITY.md before rebuilding!"
    echo ""
fi

echo "Skill deployment prepared. Complete steps 1-4 to activate."