--- heph.nvim — the primary surface for hephaestus (tech-spec §8): an
--- obsidian.nvim replacement that is a thin client of the local `hephd` over
--- its unix-socket JSON-RPC. This module is the public entry point.

local config = require("heph.config")

local M = {}

--- The resolved config from the last `setup` (nil before setup).
M.config = nil

--- Configure the plugin. `opts.socket` overrides the daemon socket path;
--- `opts.keymaps = false` disables the default keymaps. Idempotent.
function M.setup(opts)
  local cfg = vim.tbl_deep_extend("force", config.defaults, opts or {})
  cfg.socket = config.resolve_socket(cfg.socket)
  cfg.db = config.resolve_db(cfg.db)
  M.config = cfg

  local rpc = require("heph.rpc")
  local daemon = require("heph.daemon")
  rpc.setup(cfg.socket)

  if cfg.autostart then
    -- Plug-and-play: bring up a managed local daemon if none is serving, and
    -- self-heal a dropped connection on later calls.
    local ok = pcall(daemon.ensure, {
      socket = cfg.socket,
      db = cfg.db,
      bin = cfg.bin,
      autostart = true,
    })
    if not ok then
      require("heph.util").notify(
        "could not start hephd; will retry on first use",
        vim.log.levels.WARN
      )
    end
    rpc.set_respawn(function()
      pcall(daemon.ensure, {
        socket = cfg.socket,
        db = cfg.db,
        bin = cfg.bin,
        autostart = true,
      })
    end)
  else
    -- Explicit architecture: connect only, never spawn over the user's daemon.
    rpc.set_respawn(nil)
    if not daemon.ensure({ socket = cfg.socket, autostart = false }) then
      require("heph.util").notify(
        "no hephd reachable at " .. cfg.socket .. " (autostart disabled)",
        vim.log.levels.WARN
      )
    end
  end

  config.apply_keymaps(cfg)
  return M
end

return M