setup

#!/usr/bin/env bash
# setup — install worldbuilder skills into Claude Code.
#
# What this does:
#   1. Resolves the worldbuilder repo location (the directory containing this script).
#   2. Symlinks the bin/ scripts into ~/.worldbuilder/bin/ so skills can reach them
#      via $HOME/.worldbuilder/bin/wb-* regardless of repo location.
#   3. Creates ~/.worldbuilder/ state directory structure.
#   4. Symlinks each skill directory into ~/.claude/skills/ as a sibling of any other
#      skill collections (e.g. gstack). Each symlink replicates the single SKILL.md.
#   5. Writes the repo location to ~/.worldbuilder/config.
#
# What this does NOT do:
#   - Modify your shell profile.
#   - Modify PATH.
#   - Install any Python, Node, or Rust dependencies.
#   - Contact any remote server.
#   - Modify settings.json or any Claude Code global config.

set -euo pipefail

REPO_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
WB_HOME="${WORLDBUILDER_HOME:-$HOME/.worldbuilder}"
CLAUDE_SKILLS="$HOME/.claude/skills"

SKILLS=(
    north-star
    founder-fit
    squiggle
    idea-shotgun
    adjacent-possible
    kill-darlings
    hypothesis
    demo
    memo
    mom-test
    conviction
    talent-density
    planting
)

BIN_SCRIPTS=(
    wb-slug
    wb-config
    wb-squiggle-append
    wb-squiggle-read
    wb-napkin-math
    wb-last-action
    wb-conviction-trend
    wb-profile
    wb-session-update
)

printf 'worldbuilder setup\n'
printf '==================\n'
printf 'repo:          %s\n' "$REPO_DIR"
printf 'state home:    %s\n' "$WB_HOME"
printf 'claude skills: %s\n' "$CLAUDE_SKILLS"
printf '\n'

# ---- 1. Sanity checks ----------------------------------------------------

if [ ! -f "$REPO_DIR/WORLDBUILDER.md" ]; then
    printf 'ERROR: %s does not look like a worldbuilder repo (no WORLDBUILDER.md).\n' "$REPO_DIR" >&2
    exit 1
fi

if [ ! -d "$REPO_DIR/bin" ]; then
    printf 'ERROR: %s/bin does not exist.\n' "$REPO_DIR" >&2
    exit 1
fi

# ---- 2. Create state directories -----------------------------------------

mkdir -p "$WB_HOME/bin"
mkdir -p "$WB_HOME/projects"
touch "$WB_HOME/config"
touch "$WB_HOME/builder-profile.sessions"

# ---- 3. Symlink bin/ scripts ---------------------------------------------

printf 'linking bin/ scripts into %s...\n' "$WB_HOME/bin"
for script in "${BIN_SCRIPTS[@]}"; do
    src="$REPO_DIR/bin/$script"
    dst="$WB_HOME/bin/$script"
    if [ ! -x "$src" ]; then
        printf '  WARNING: %s not executable, attempting chmod\n' "$src"
        chmod +x "$src" 2>/dev/null || true
    fi
    if [ -L "$dst" ] || [ -e "$dst" ]; then
        rm -f "$dst"
    fi
    ln -s "$src" "$dst"
    printf '  %s → %s\n' "$script" "$src"
done

# ---- 4. Write repo location to config ------------------------------------

"$WB_HOME/bin/wb-config" set repo "$REPO_DIR"
"$WB_HOME/bin/wb-config" set version "$(cat "$REPO_DIR/VERSION" 2>/dev/null || printf '0.1.0')"

# ---- 5. Symlink skills into ~/.claude/skills/ ----------------------------

mkdir -p "$CLAUDE_SKILLS"

# Top-level /worldbuilder root skill (single SKILL.md at repo root)
printf '\nlinking root /worldbuilder skill...\n'
root_dst="$CLAUDE_SKILLS/worldbuilder"
if [ -L "$root_dst" ] || [ -d "$root_dst" ]; then
    if [ -L "$root_dst" ]; then
        rm -f "$root_dst"
    else
        printf '  NOTE: %s already exists as a real directory. Backing up to %s.bak\n' "$root_dst" "$root_dst"
        mv "$root_dst" "$root_dst.bak.$(date +%s)"
    fi
fi
mkdir -p "$root_dst"
ln -sf "$REPO_DIR/SKILL.md" "$root_dst/SKILL.md"
printf '  %s → %s\n' "$root_dst/SKILL.md" "$REPO_DIR/SKILL.md"

# Individual skills — each as its own top-level sibling
printf '\nlinking individual skills...\n'
for skill in "${SKILLS[@]}"; do
    src="$REPO_DIR/$skill/SKILL.md"
    dst_dir="$CLAUDE_SKILLS/$skill"
    dst="$dst_dir/SKILL.md"
    if [ ! -f "$src" ]; then
        printf '  SKIP: %s (no SKILL.md in repo)\n' "$skill"
        continue
    fi
    if [ -L "$dst_dir" ] || [ -d "$dst_dir" ]; then
        if [ -L "$dst_dir" ]; then
            rm -f "$dst_dir"
        else
            # Real directory — back it up rather than deleting (could be a gstack skill with the same name)
            printf '  NOTE: %s already exists; backing up to %s.bak\n' "$dst_dir" "$dst_dir"
            mv "$dst_dir" "$dst_dir.bak.$(date +%s)"
        fi
    fi
    mkdir -p "$dst_dir"
    ln -sf "$src" "$dst"
    printf '  /%s → %s\n' "$skill" "$src"
done

# ---- 6. Summary ----------------------------------------------------------

printf '\ndone.\n\n'
printf 'next steps:\n'
printf '  1. Open Claude Code in any project.\n'
printf '  2. Type /worldbuilder to start, or describe your situation in plain English.\n'
printf '  3. Read WORLDBUILDER.md for the ethos and anti-sycophancy rules.\n'
printf '\nstate will accumulate in %s/projects/<slug>/\n' "$WB_HOME"
printf 'to uninstall: rm -rf %s and remove the symlinks under %s\n' "$WB_HOME" "$CLAUDE_SKILLS"