local api = vim.api
local wk = require('which-key')

--------------------
-- Basic bindings --
--------------------
-- No one likes Esc
api.nvim_set_keymap('i', 'jk', [[<Esc>]], {noremap = true, silent = true})

-- Escape to normal mode in terminal buffer
api.nvim_set_keymap('t', '<Esc>', '<C-\\><C-n>', {noremap = true, silent = true})

-- Continuous indent
api.nvim_set_keymap('v', '<', '<gv', {noremap = true, silent = true})
api.nvim_set_keymap('v', '>', '>gv', {noremap = true, silent = true})

-- Normal mode
wk.register({
    -- Better Y
    Y = {'y$', 'Yank to eol'},

    -- Copy the whole buffer
    ['<C-a>'] = {'<Cmd>%y+<CR>', 'Copy whole buffer'},

    -- 'Legacy' save buffer
    -- ['<C-s>'] = {':w<CR>', 'Write buffer'},

    -- Close buffer
    ['<C-x>'] = {':bd!<CR>', 'Close buffer'},

    -- Remove trailing whitespace
    ['<A-w>'] = {':%s/\\s\\+$//e<CR>', 'Remove trailing'},

    -- Resize buffer
    ['<A-j>'] = {':resize -2<CR>', 'Resize vertical -2'},
    ['<A-k>'] = {':resize +2<CR>', 'Resize vertical +2'},
    ['<A-h>'] = {':vertical resize -2<CR>', 'Resize horizontal -2'},
    ['<A-l>'] = {':vertical resize +2<CR>', 'Resize horizontal +2'},

    -- Switch between tabs and spaces
    ['<A-t>'] = {
        function()
            if vim.o.expandtab == true then
                vim.cmd('set noexpandtab nosmarttab softtabstop& shiftwidth&')
                vim.cmd('echomsg "Switched to indent with tabs"')
            else
                vim.opt.expandtab = true
                vim.opt.smarttab = true
                vim.opt.softtabstop = 4
                vim.opt.shiftwidth = 4
                vim.cmd('echomsg "Switched to indent with 4 spaces"')
            end
        end,
        'Switch indent style'
    },

    -- Naming common keys
    ['['] = {name = 'Block motions (previous)'},
    [']'] = {name = 'Block motions (next)'},
    g = {name = 'Goto motions'},
    z = {name = 'Misc utils'}
})

-------------
-- Plugins --
-------------
-- Normal mode
wk.register({
    -- Don't need to show bufferline numbers
    ['<leader>1'] = 'which_key_ignore',
    ['<leader>2'] = 'which_key_ignore',
    ['<leader>3'] = 'which_key_ignore',
    ['<leader>4'] = 'which_key_ignore',
    ['<leader>5'] = 'which_key_ignore',
    ['<leader>6'] = 'which_key_ignore',
    ['<leader>7'] = 'which_key_ignore',
    ['<leader>8'] = 'which_key_ignore',
    ['<leader>9'] = 'which_key_ignore',

    -- Move between tabs
    ['<TAB>'] = {'<Cmd>BufferLineCycleNext<CR>', 'Next buffer'},
    ['<S-TAB>'] = {'<Cmd>BufferLineCyclePrev<CR>', 'Previous buffer'},

    -- NvimTree
    ['<C-n>'] = {':NvimTreeToggle<CR>', 'NvimTree'},

    -- ToggleTerm
    ['<C-\\>'] = 'Toggle terminal',
})

-- With leader key (normal mode)
wk.register({
    -- GitSigns
    g = {
        name = 'Git',
        b = 'Blame current line',
        j = 'Next hunk',
        k = 'Previous hunk',
        p = 'Preview hunk',
        r = 'Reset hunk',
        R = 'Reset all hunks in buffer',
        s = 'Stage hunk',
        u = 'Undo hunk'
    },

    -- Telescope
    f = {
        name = 'Telescope'
    },

    b = {
        name = 'Buffer',
        n = {':DashboardNewFile<CR>', 'New file'}
    }
}, {prefix = '<leader>'})

-- With leader key (visual mode)
wk.register({
    -- GitSigns
    g = {
        name = 'Git',
        r = 'Reset hunk',
        s = 'Stage hunk'
    }
}, {mode = 'v', prefix = '<leader>'})