vim.cmd [[ packadd packer.nvim ]]

return require('packer').startup(function()
    use 'wbthomason/packer.nvim'    -- plugin manager (can manage itself)
    use 'junegunn/vim-easy-align'   -- align
    use 'AndrewRadev/sideways.vim'  -- Move arguments sideways
    use 'FooSoft/vim-argwrap'       -- Put arguments on multiple lines
    use 'tpope/vim-eunuch'          -- basic commands on current file (Rename/Remove)
    use 'romainl/vim-cool'          -- only highlight search matches when searching
    use 'lukas-reineke/indent-blankline.nvim'

    use {
        'jpalardy/vim-slime',
        config = function()
            vim.g.slime_target = 'tmux'
        end
    }

    use {
        'cacharle/vim-jinja-languages',
        requires = {'mitsuhiko/vim-jinja'}
    }

    -- python formatter
    use {
        'psf/black',
        tag = 'stable',
        ft = 'python',
        config = function()
            vim.cmd [[ autocmd BufWritePre *.py Black ]]
        end
    }

    -- tags managment
    use {
        'ludovicchabant/vim-gutentags',
        config = function()
            vim.g.gutentags_ctags_exclude = {
                'doc/*',
                'docs/*',
                'Makefile',
                '.mypy_cache',
                '.pytest_cache',
                '.tox',
                'build/*',
                'dist/*'
            }
        end
    }


    -- nvim lsp configuration
    use {
        'neovim/nvim-lspconfig',
        ft = {'rust', 'python', 'c', 'cpp', 'lua'},
        config = function()
            local on_attach = function(_, bufnr)
                local opts = { noremap = true, silent = true }
                local map = function(...) vim.api.nvim_buf_set_keymap(bufnr, ...) end
                map('n', '<leader>[', '<cmd>lua vim.lsp.buf.declaration()<CR>', opts)
                map('n', '<leader>]', '<cmd>lua vim.lsp.buf.definition()<CR>', opts)
                map('n', 'K', '<cmd>lua vim.lsp.buf.hover()<CR>', opts)
                map('n', 'gk', '<cmd>lua vim.lsp.buf.signature_help()<CR>', opts)
                map('n', 'gd', '<cmd>lua vim.lsp.buf.definition()<CR>', opts)
                map('n', '[d', '<cmd>lua vim.diagnostic.goto_prev()<CR>', opts)
                map('n', ']d', '<cmd>lua vim.diagnostic.goto_next()<CR>', opts)
                map('n', '<leader>q', '<cmd>Telescope diagnostics<CR>', opts)
                map('n', '<leader>rn', '<cmd>lua vim.lsp.buf.rename()<CR>', opts)
            end
            local lspconfig = require('lspconfig')
            local capabilities = require('cmp_nvim_lsp').update_capabilities(
                vim.lsp.protocol.make_client_capabilities()
            )

            -- lspconfig.clangd.setup { on_attach = on_attach }
            -- lspconfig.rust_analyzer.setup { on_attach = on_attach }
            -- need python-lsp-server and pyls-flake8
            lspconfig.pylsp.setup { on_attach = on_attach, capabilities = capabilities }
            -- package lua-language-server on ArchLinux
            -- lspconfig.sumneko_lua.setup {
            --     on_attach = on_attach ,
            --     settings = {
            --         Lua = {
            --             runtime = {
            --                 -- Tell the language server which version of Lua you're using (most likely LuaJIT in the case of Neovim)
            --                 version = 'LuaJIT',
            --                 -- Setup your lua path
            --                 path = vim.split(package.path, ';'),
            --             },
            --             diagnostics = {
            --                 -- Get the language server to recognize the `vim` global
            --                 globals = {'vim'},
            --             },
            --             workspace = {
            --                 -- Make the server aware of Neovim runtime files
            --                 library = {
            --                     [vim.fn.expand('$VIMRUNTIME/lua')] = true,
            --                     [vim.fn.expand('$VIMRUNTIME/lua/vim/lsp')] = true,
            --                 },
            --             },
            --         }
            --     },
            -- }
            vim.diagnostic.config {
                signs = false,
                update_in_insert = false,
            }
        end,
    }

    -- -- rust lsp (needs rust-analyser)
    -- use {
    --     'simrat39/rust-tools.nvim',
    --     requires = {'neovim/nvim-lspconfig'},
    --     ft = {'rust'},
    --     config = function()
    --         local on_attach = function(_, bufnr)
    --             local opts = { noremap = true, silent = true }
    --             local map = function(...) vim.api.nvim_buf_set_keymap(bufnr, ...) end
    --             map('n', '<leader>[', '<cmd>lua vim.lsp.buf.declaration()<CR>', opts)
    --             map('n', '<leader>]', '<cmd>lua vim.lsp.buf.definition()<CR>', opts)
    --             map('n', 'K', '<cmd>lua vim.lsp.buf.hover()<CR>', opts)
    --             map('n', 'gk', '<cmd>lua vim.lsp.buf.signature_help()<CR>', opts)
    --             map('n', 'gd', '<cmd>lua vim.lsp.buf.definition()<CR>', opts)
    --             map('n', '[d', '<cmd>lua vim.diagnostic.goto_prev()<CR>', opts)
    --             map('n', ']d', '<cmd>lua vim.diagnostic.goto_next()<CR>', opts)
    --             map('n', '<leader>q', '<cmd>Telescope diagnostics<CR>', opts)
    --             map('n', '<leader>rn', '<cmd>lua vim.lsp.buf.rename()<CR>', opts)
    --         end
    --         require('rust-tools').setup {
    --             server = {
    --                 on_attach = on_attach,
    --             }
    --         }
    --         vim.diagnostic.config {
    --             signs = false,
    --             update_in_insert = false,
    --         }
    --     end
    -- }

    use {
        'hrsh7th/nvim-cmp',
        requires = {
            'hrsh7th/cmp-nvim-lsp',
            'hrsh7th/cmp-path',
            'hrsh7th/cmp-buffer',
            'hrsh7th/cmp-nvim-lsp-signature-help',
            'onsails/lspkind.nvim',
        },
        config = function()
            local lspkind = require('lspkind')
            local cmp = require('cmp')
            cmp.setup {
                mapping = cmp.mapping.preset.insert({
                    ['<C-n>'] = cmp.mapping.select_next_item(),
                    ['<C-p>'] = cmp.mapping.select_prev_item(),
                    ['<TAB>'] = cmp.mapping.confirm({ select = true }),
                    ['<C-b>'] = cmp.mapping.scroll_docs(-4),
                    ['<C-f>'] = cmp.mapping.scroll_docs(4),
                }),
                -- order of the sources matter (first are higher priority)
                sources = {
                    { name = "nvim_lsp" },
                    { name = 'nvim_lsp_signature_help' },
                    { name = "path" },
                    { name = "buffer", keyword_length = 2 },
                },
                formatting = {
                    format = lspkind.cmp_format({
                        with_text = true,
                        menu = {
                            nvim_lsp = "[LSP]",
                            path = "[path]",
                            buffer = "[buf]",
                        }
                    })
                },
                window = {
                    documentation = cmp.config.window.bordered(),
                },
                experimental = {
                    ghost_text = true,
                }
            }
        end
    }


    -- comment text objects
    use {
        'numToStr/Comment.nvim',
        config = function()
            require('Comment').setup()
        end
    }
    -- gruvbox color scheme
    -- use {
    --     'ellisonleao/gruvbox.nvim',
    --     requires = {'rktjmp/lush.nvim'},
    --     config = function()
    --         vim.opt.termguicolors = true
    --         vim.opt.background = "dark"
    --         -- vim.cmd [[ colorscheme gruvbox ]]
    --         vim.g.gruvbox_italic = 1
    --         vim.g.gruvbox_bold = 1
    --         vim.g.gruvbox_termcolors = 256
    --         vim.g.gruvbox_contrast_dark = 'medium'
    --         vim.g.gruvbox_contrast_light = 'hard'
    --         vim.g.gruvbox_invert_selection = 0
    --     end
    -- }
    -- nord color scheme
    use {
        'shaunsingh/nord.nvim',
        config = function()
            vim.opt.termguicolors = true
            vim.opt.background = "dark"
            vim.cmd [[ colorscheme nord ]]
            vim.g.nord_contrast = true
            vim.g.nord_borders = true
            vim.g.nord_italic = true
        end
    }
    -- status line
    use {
        'nvim-lualine/lualine.nvim',
        requires = {'kyazdani42/nvim-web-devicons', opt = true},
        config = function()
            require('lualine').setup {
                options = {
                    -- theme = 'gruvbox',
                    theme = 'nord',
                    icons_enabled = true,
                    section_separators = '',
                    component_separators = '',
                    globalstatus = true,
                }
            }
        end
    }
    -- better syntax highlight for everything
    use {
        'nvim-treesitter/nvim-treesitter',
        run = ':TSUpdate',
        config = function()
            require('nvim-treesitter.configs').setup {
                highlight = {
                    enable = true
                },
                -- indent = { enable = true },
                -- TODO: could be neat
                -- incremental_selection = {
                --     enable = true,
                --     keymaps = {
                --         init_selection = "gnn",
                --         node_incremental = "grn",
                --         scope_incremental = "grc",
                --         node_decremental = "grm",
                --     }
                -- }
            }
            vim.cmd [[ highlight link pythonTSKeywordOperator Keyword ]]
        end
    }
    -- fuzzy finder (replace fzf.vim or ctrlp.vim)
    use {
        'nvim-telescope/telescope.nvim',
        requires = {
            {'nvim-lua/plenary.nvim'},
            {'kyazdani42/nvim-web-devicons', opt = true},
        },
        config = function()
            local actions = require('telescope.actions')
            require('telescope').setup {
                defaults = {
                    mappings = {
                        i = {
                            ['<C-j>'] = actions.move_selection_next,
                            ['<C-k>'] = actions.move_selection_previous,
                            ['<esc>'] = actions.close,
                            ['kj'] = actions.close,
                        }
                    },
                }
            }
            local map = vim.api.nvim_set_keymap
            map('n', '<C-p>', '<cmd>Telescope git_files<cr>', {})
            map('n', '<leader>H', '<cmd>Telescope help_tags<cr>', {})
            map('n', '<leader>;', '<cmd>Telescope commands<cr>', {})
            map('n', '<leader>p', '<cmd>Telescope tags<cr>', {})
            map('n', '<leader>g', '<cmd>Telescope live_grep<cr>', {})
            map('n', '<leader>G', '<cmd>Telescope grep_string<cr>', {})
        end

    }
    -- todos,fix,etc.. highlight and list
    use {
        'folke/todo-comments.nvim',
        requires = 'nvim-lua/plenary.nvim',
        config = function()
            require('todo-comments').setup {
                signs = false
            }
        end
    }

    -- remote files and lsp
    use {
        'chipsenkbeil/distant.nvim',
        config = function()
            -- local on_attach = function(client, bufnr)
            --     local opts = { noremap = true, silent = true }
            --     local map = function(...) vim.api.nvim_buf_set_keymap(bufnr, ...) end
            --     map('n', '<leader>[', '<cmd>lua vim.lsp.buf.declaration()<CR>', opts)
            --     map('n', '<leader>]', '<cmd>lua vim.lsp.buf.definition()<CR>', opts)
            --     map('n', 'K', '<cmd>lua vim.lsp.buf.hover()<CR>', opts)
            --     map('n', '[d', '<cmd>lua vim.diagnostic.goto_prev()<CR>', opts)
            --     map('n', ']d', '<cmd>lua vim.diagnostic.goto_next()<CR>', opts)
            --     map('n', '<leader>q', '<cmd>Telescope lsp_workspace_diagnostics<CR>', opts)
            --     map('n', '<leader>rn', '<cmd>lua vim.lsp.buf.rename()<CR>', opts)
            -- end
            require('distant').setup {
                ['*'] = require('distant.settings').chip_default()
            }
            -- TODO: extend with job_distant_config.lua
        end,
        run = ':DistantInstall'
    }

    -- jupyter kernel in nvim (with images, needs ueberzug)
    use {
        'dccsillag/magma-nvim',
        -- ft = { 'python' }, -- doesn't work
        run = ':UpdateRemotePlugins',
        config = function()
            local map = vim.api.nvim_set_keymap
            map('n', '<leader>m',  "nvim_exec('MagmaEvaluateOperator', v:true)", { expr = true})
            map('n', '<leader>mm', '<cmd>MagmaEvaluateLine<CR>', {})
            map('x', '<leader>m',  '<cmd><C-u>MagmaEvaluateVisual<CR>', {})
            map('n', '<leader>mc', '<cmd>MagmaReevaluateCell<CR>', {})
            map('n', '<leader>md', '<cmd>MagmaDelete<CR>', {})
            map('n', '<leader>mo', '<cmd>MagmaShowOutput<CR>', {})
        end
    }

    use { 'nvim-treesitter/playground', opt = true, cmd = { 'TSPlaygroundToggle' } }
    -- use { '~/git/argwrap.nvim', opt = true }
end)