#!/usr/bin/env bash
#
# start-nvim.sh — launch Neovim with a minimal config that loads nuwiki.
#
# The plugin's install() downloads a pre-built release of nuwiki-ls for
# your platform from the nuwiki-rs repository. On first launch a missing
# binary is auto-downloaded via the bundled Vim script; set
# NUWIKI_DEV_SKIP_BUILD=1 to skip the download entirely.
#
# Usage: ./development/start-nvim.sh [extra args...]
#   ./development/start-nvim.sh                       # open the scratch wiki's index
#   ./development/start-nvim.sh path/to/note.wiki     # open a specific file
#   NUWIKI_DEV_WIKI=/tmp/foo ./development/start-nvim.sh
#   NUWIKI_DEV_NO_SEED=1 ./development/start-nvim.sh      # use WIKI_DIR as-is (no scratch seeding)
#   NUWIKI_DEV_SKIP_BUILD=1 ./development/start-nvim.sh   # skip the download step
#
# Each launch starts clean: the scratch wiki is reseeded from a pristine
# copy and the editor state (cache/data/config) is wiped, so stale edits
# never carry over. A wiki you point at with NUWIKI_DEV_WIKI is never wiped
# (seeded only if empty).
#
# 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

# Shared paths + helpers (log, ensure_binary, write_sample_wiki, seed_wiki).
source "$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)/_common.sh"

INIT_FILE="$DEV_DIR/init.lua"
STATE_DIR="$DEV_DIR/nvim-state"
DATA_DIR="$DEV_DIR/nvim-data"
CONFIG_DIR="$DEV_DIR/nvim-config"

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('$REPO_ROOT')
vim.opt.runtimepath:append('$DEV_DIR/calendar-vim')

vim.g.nuwiki_binary_path = '$REPO_ROOT/bin/nuwiki-ls'
vim.g.nuwiki_wiki_root = '$WIKI_DIR'
vim.g.nuwiki_file_extension = '.wiki'
vim.g.nuwiki_syntax = 'vimwiki'
vim.g.nuwiki_diary_rel_path = 'diary'

require('nuwiki').setup({
  wiki_root = '$WIKI_DIR',
  -- Exercise the per-wiki display settings via the global shorthand: these
  -- fold into the single wiki, so :NuwikiTOC writes `== Contents ==` (level 2)
  -- and HTML export numbers headings.
  toc_header_level = 2,
  html_header_numbering = 2,
  html_header_numbering_sym = ' -',
})

-- 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
  ensure_calendar_vim
  seed_wiki
  write_init
  reset_dirs "$STATE_DIR" "$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 "$@"