#!/usr/bin/env bash
#
# start-nvim.sh — launch Neovim with a minimal config that loads nuwiki.
#
# Builds the language server (release mode), symlinks it into `bin/` so
# the plugin's default install path resolves, then spawns Neovim with
# `--clean` and a generated `init.lua` that:
#   * adds this repo to `runtimepath`
#   * configures wiki_root to a scratch directory under
#     $XDG_CACHE_HOME/nuwiki-dev/wiki
#   * calls `require('nuwiki').setup({...})`
#
# Usage: ./start-nvim.sh [extra args...]
#   ./start-nvim.sh                       # open the scratch wiki's index
#   ./start-nvim.sh path/to/note.wiki     # open a specific file
#   NUWIKI_DEV_WIKI=/tmp/foo ./start-nvim.sh
#
# Tested with Neovim 0.10+. State (cache/data/config) lives under
# $XDG_CACHE_HOME/nuwiki-dev/ so your real Neovim install stays
# untouched.

set -euo pipefail

REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
DEV_DIR="${XDG_CACHE_HOME:-$HOME/.cache}/nuwiki-dev"
WIKI_DIR="${NUWIKI_DEV_WIKI:-$DEV_DIR/wiki}"
INIT_FILE="$DEV_DIR/init.lua"
STATE_DIR="$DEV_DIR/nvim-state"
DATA_DIR="$DEV_DIR/nvim-data"
CONFIG_DIR="$DEV_DIR/nvim-config"

log() { printf '\033[1;34m[nuwiki-dev]\033[0m %s\n' "$*"; }

ensure_binary() {
  local bin="$REPO_ROOT/bin/nuwiki-ls"
  local built="$REPO_ROOT/target/release/nuwiki-ls"
  if [[ -x "$bin" ]]; then
    return
  fi
  log "building nuwiki-ls (release)…"
  cargo build --release -p nuwiki-ls --manifest-path "$REPO_ROOT/Cargo.toml"
  mkdir -p "$REPO_ROOT/bin"
  ln -sf "$built" "$bin"
  log "binary ready: $bin"
}

seed_wiki() {
  mkdir -p "$WIKI_DIR" "$WIKI_DIR/diary"
  if [[ ! -f "$WIKI_DIR/index.wiki" ]]; then
    cat > "$WIKI_DIR/index.wiki" <<'EOF'
= Welcome to nuwiki =

This is a scratch wiki created by start-nvim.sh. Edit, run commands,
or jump to the linked pages to test the plugin.

== Smoke test ==

- [[Notes]]
- [[diary/]]
- [ ] Toggle me with <C-Space>
- [ ] Or with :VimwikiToggleListItem

== Commands to try ==

- :VimwikiTOC
- :VimwikiGenerateLinks
- :VimwikiCheckLinks
- :VimwikiMakeDiaryNote
- :Vimwiki2HTMLBrowse

== Tags ==

:smoke-test:sandbox:

== Links ==

* [[Notes]]
* [[Notes#section-one]]
* https://example.com
EOF
  fi
  if [[ ! -f "$WIKI_DIR/Notes.wiki" ]]; then
    cat > "$WIKI_DIR/Notes.wiki" <<'EOF'
= Notes =

A second page so [[index]] has somewhere to point.

== Section one ==

Anchor target for :checkhealth-style smoke tests.
EOF
  fi
}

write_init() {
  mkdir -p "$DEV_DIR"
  cat > "$INIT_FILE" <<EOF
-- start-nvim.sh: generated minimal config for nuwiki development.
-- Regenerated on every launch; edit start-nvim.sh, not this file.

-- Confine state to the dev cache so we never touch the user's real
-- Neovim install.
vim.env.XDG_STATE_HOME = '$STATE_DIR'
vim.env.XDG_DATA_HOME = '$DATA_DIR'
vim.env.XDG_CONFIG_HOME = '$CONFIG_DIR'

vim.opt.runtimepath:prepend('$REPO_ROOT')

vim.g.nuwiki_binary_path = '$REPO_ROOT/bin/nuwiki-ls'

-- Friendly defaults for an interactive smoke test.
vim.opt.number = true
vim.opt.signcolumn = 'yes'
vim.opt.termguicolors = true
vim.opt.swapfile = false
vim.opt.writebackup = false
vim.opt.undofile = false
vim.g.mapleader = ' '

require('nuwiki').setup({
  wiki_root = '$WIKI_DIR',
})

-- Surface log lines (the LSP logs via window/logMessage). Without this
-- they're swallowed; with it they land in :messages.
vim.lsp.set_log_level('info')

print('[nuwiki-dev] ready — wiki root: $WIKI_DIR')
print('[nuwiki-dev] :LspInfo to inspect, :checkhealth nuwiki for diagnostics')
EOF
}

main() {
  ensure_binary
  seed_wiki
  write_init
  mkdir -p "$STATE_DIR" "$DATA_DIR" "$CONFIG_DIR"

  log "launching: nvim --clean -u $INIT_FILE"
  if [[ $# -gt 0 ]]; then
    exec nvim --clean -u "$INIT_FILE" "$@"
  else
    exec nvim --clean -u "$INIT_FILE" "$WIKI_DIR/index.wiki"
  fi
}

main "$@"