(module user.lsp
  {require {nvim aniseed.nvim}})

(local lspconfig (require :lspconfig))
(local treesitter_configs (require :nvim-treesitter.configs))
(local treesitter_install (require :nvim-treesitter.install))
(local cmp (require :cmp))

(nvim.set_keymap "" :gd "<cmd>lua vim.lsp.buf.definition()<CR>" {:silent true :noremap true})
(nvim.set_keymap "" :gh "<cmd>lua vim.lsp.buf.hover()<CR>" {:silent true :noremap true})
(nvim.set_keymap "" :gi "<cmd>lua vim.lsp.buf.implementation()<CR>" {:silent true :noremap true})
(nvim.set_keymap "" :gr "<cmd>lua vim.lsp.buf.references()<CR>" {:silent true :noremap true})
(nvim.set_keymap "" :gs "<cmd>lua vim.lsp.buf.signature_help()<CR>" {:silent true :noremap true})
(nvim.set_keymap "" :<leader>e "<cmd>lua vim.lsp.diagnostic.show_line_diagnostics()<CR>" {:silent true :noremap true})

(lspconfig.rust_analyzer.setup {})
(lspconfig.gopls.setup {})

; treesitter
(set treesitter_install.compilers ["clang"])
(treesitter_configs.setup {:ensure_installed ["c" "cpp" "python" "go" "rust" "javascript" "typescript" "lua"]
                   :highlight {:enable true}
                   :indent {:enable true}
                   :textobjects {:select {:enable true
                                          :keymaps {:ia "@parameter.inner"
                                                    :oa "@parameter.outer"}}
                                 :swap {:enable true
                                        :swap_next {:<S-l> "@parameter.inner"}
                                        :swap_previous {:<S-h> "@parameter.inner"}}}})

;; completion
(set nvim.o.completeopt "menu,menuone,noselect")

(def- cmp-src-menu-items
  {:buffer "buffer"
   :nvim_lsp "lsp"
   :path "path"})

(def- cmp-srcs
  [{:name :nvim_lsp}
   {:name :path}
   {:name :buffer}])

(cmp.setup {:formatting
            {:format (fn [entry item]
                       (set item.menu (or (. cmp-src-menu-items entry.source.name) ""))
                       item)}
            :mapping {:<S-k> (cmp.mapping.select_prev_item)
                      :<S-j> (cmp.mapping.select_next_item)
                      ; :<C-b> (cmp.mapping.scroll_docs (- 4))
                      ; :<C-f> (cmp.mapping.scroll_docs 4)
                      ; :<C-Space> (cmp.mapping.complete)
                      ; :<C-e> (cmp.mapping.close)
                      :<CR> (cmp.mapping.confirm {:behavior cmp.ConfirmBehavior.Insert
                                                  :select true})}
            :sources cmp-srcs})