nvim/lua/general.lua

require('lualine').setup {
    options = {
        icons_enabled = true,
        theme = 'dracula',
        component_separators = { left = '', right = '' },
        section_separators = { left = '', right = '' },
        disabled_filetypes = {
            statusline = {},
            winbar = {},
        },
        ignore_focus = {},
        always_divide_middle = true,
        globalstatus = false,
        refresh = {
            statusline = 1000,
            tabline = 1000,
            winbar = 1000,
        }
    },
    sections = {
        lualine_a = { 'mode' },
        lualine_b = { 'branch', 'diff', 'diagnostics' },
        lualine_c = { 'filename' },
        lualine_x = { 'encoding', 'fileformat', 'filetype' },
        lualine_y = { 'progress' },
        lualine_z = { 'tabs' }
    },
    inactive_sections = {
        lualine_a = {},
        lualine_b = {},
        lualine_c = { 'filename' },
        lualine_x = { 'location' },
        lualine_y = {},
        lualine_z = {}
    },
    tabline = {},
    winbar = {},
    inactive_winbar = {},
    extensions = {
        'quickfix',
        'nvim-tree',
        'symbols-outline',
        'fugitive',
        'man'
    }

}

-- load lsp and dependencies
require("mason").setup()
require("mason-lspconfig").setup({
    ensure_installed = {
        "bashls",
        "pyright",
        "pylsp",
        --"pyre",
        "perlnavigator",
        "dockerls",
        "kotlin_language_server",
        "intelephense",
        "eslint",
        "tsserver",
        "cssls",
        "cssmodules_ls",
        "diagnosticls",
        "jsonls",
        "sumneko_lua",
        "sqlls",
        "yamlls",
        "lemminx",
        "marksman"
    }
})

-- setup minimap
local codewindow = require('codewindow')
codewindow.setup({
    minimap_width = 20, -- The width of the text part of the minimap
    width_multiplier = 4, -- How many characters one dot represents
    use_lsp = true, -- Use the builtin LSP to show errors and warnings
    use_treesitter = true, -- Use nvim-treesitter to highlight the code
    show_cursor = true,
    exclude_filetypes = {}, -- Choose certain filetypes to not show minimap on
    z_index = 1, -- The z-index the floating window will be on
})
codewindow.apply_default_keybinds()


-- Set up nvim-cmp.
local cmp = require 'cmp'
local lspkind = require('lspkind')

cmp.setup({
    snippet = {
        -- REQUIRED - you must specify a snippet engine
        expand = function(args)
            require('luasnip').lsp_expand(args.body) -- For `luasnip` users.
        end,
    },
    window = {
        -- completion = cmp.config.window.bordered(),
        -- documentation = cmp.config.window.bordered(),
    },
    mapping = cmp.mapping.preset.insert({
        ['<C-b>'] = cmp.mapping.scroll_docs(-4),
        ['<C-f>'] = cmp.mapping.scroll_docs(4),
        ['<C-Space>'] = cmp.mapping.complete(),
        ['<C-e>'] = cmp.mapping.abort(),
        ['<CR>'] = cmp.mapping.confirm({ select = true }), -- Accept currently selected item. Set `select` to `false` to only confirm explicitly selected items.
    }),
    sources = cmp.config.sources({
        { name = 'nvim_lsp' },
        --{ name = 'vsnip' }, -- For vsnip users.
        { name = 'luasnip' }, -- For luasnip users.
        -- { name = 'ultisnips' }, -- For ultisnips users.
        -- { name = 'snippy' }, -- For snippy users.
    }, {
        { name = 'buffer' },
        { name = 'path' },
    }),
    formatting = {
        format = lspkind.cmp_format({
            --mode = 'symbol', -- show only symbol annotations
            maxwidth = 50, -- prevent the popup from showing more than provided characters (e.g 50 will not show more than 50 characters)
            ellipsis_char = '...', -- when popup menu exceed maxwidth, the truncated part would show ellipsis_char instead (must define maxwidth first)
        })
    }
})

-- Set configuration for specific filetype.
cmp.setup.filetype('gitcommit', {
    sources = cmp.config.sources({
        { name = 'cmp_git' }, -- You can specify the `cmp_git` source if you were installed it.
    }, {
        { name = 'buffer' },
    })
})

-- Use buffer source for `/` and `?` (if you enabled `native_menu`, this won't work anymore).
cmp.setup.cmdline({ '/', '?' }, {
    mapping = cmp.mapping.preset.cmdline(),
    sources = {
        { name = 'buffer' }
    }
})

-- Use cmdline & path source for ':' (if you enabled `native_menu`, this won't work anymore).
cmp.setup.cmdline(':', {
    mapping = cmp.mapping.preset.cmdline(),
    sources = cmp.config.sources({
        { name = 'path' }
    }, {
        { name = 'cmdline' }
    })
})

require("nvim-tree").setup({
    create_in_closed_folder = true,
    hijack_cursor = true,
    open_on_setup = true,
    open_on_setup_file = true,
    sync_root_with_cwd = true,
    view = {
        adaptive_size = true,
    },
    renderer = {
        full_name = true,
        group_empty = true,
        special_files = {},
        symlink_destination = false,
        indent_markers = {
            enable = true,
        },
        icons = {
            git_placement = "signcolumn",
            show = {
                file = true,
                folder = true,
                folder_arrow = true,
                git = true,
            },
        },
    },
    update_focused_file = {
        enable = true,
        update_root = true,
        ignore_list = { "help" },
    },
    diagnostics = {
        enable = true,
        show_on_dirs = true,
    },
    filters = {
        custom = {
            "^.git$",
            "^.mypy_cache$",
        },
    },
    actions = {
        change_dir = {
            enable = false,
            restrict_above_cwd = true,
        },
        open_file = {
            resize_window = true,
        },
        remove_file = {
            close_window = false,
        },
    },
    log = {
        enable = false,
        truncate = true,
        types = {
            all = false,
            config = false,
            copy_paste = false,
            diagnostics = false,
            git = false,
            profile = false,
            watcher = false,
        },
    },
})

--Gruvbox theme settings
-- setup must be called before loading the colorscheme
require("gruvbox").setup({
    undercurl = true,
    underline = true,
    bold = true,
    italic = false, -- default=true
    strikethrough = true,
    invert_selection = false,
    invert_signs = false,
    invert_tabline = false,
    invert_intend_guides = false,
    inverse = true, -- invert background for search, diffs, statuslines and errors
    contrast = "hard", -- can be "hard", "soft" or empty string
    palette_overrides = {},
    overrides = {},
    dim_inactive = true, -- default=false
    transparent_mode = false,
})

require('bufferline').setup {
    options = {
        mode = "buffers", -- set to "tabs" to only show tabpages instead
        numbers = "buffer_id",
        close_command = "bdelete! %d", -- can be a string | function, see "Mouse actions"
        right_mouse_command = "bdelete! %d", -- can be a string | function, see "Mouse actions"
        left_mouse_command = "buffer %d", -- can be a string | function, see "Mouse actions"
        middle_mouse_command = nil, -- can be a string | function, see "Mouse actions"
        indicator = {
            icon = '>', -- this should be omitted if indicator style is not 'icon'
            style = 'icon',
        },
        buffer_close_icon = '',
        modified_icon = '●',
        close_icon = '',
        left_trunc_marker = '',
        right_trunc_marker = '',
        max_name_length = 18,
        max_prefix_length = 15, -- prefix used when a buffer is de-duplicated
        truncate_names = true, -- whether or not tab names should be truncated
        tab_size = 18,
        diagnostics = "coc",
        diagnostics_update_in_insert = false,
        -- The diagnostics indicator can be set to nil to keep the buffer name highlight but delete the highlighting
        color_icons = true, -- whether or not to add the filetype icon highlights
        show_buffer_icons = true, -- disable filetype icons for buffers
        show_buffer_close_icons = true,
        show_buffer_default_icon = true, -- whether or not an unrecognised filetype should show a default icon
        show_close_icon = false,
        show_tab_indicators = true,
        show_duplicate_prefix = true, -- whether to show duplicate buffer prefix
        persist_buffer_sort = true, -- whether or not custom sorted buffers should persist
        -- can also be a table containing 2 custom separators
        -- [focused and unfocused]. eg: { '|', '|' }
        separator_style = "thick",
        enforce_regular_tabs = false,
        always_show_bufferline = true,
        hover = {
            enabled = true,
            delay = 200,
            reveal = { 'close' }
        },
        sort_by = 'tabs',
    }
}