local alpha = require('alpha')
local dashboard = require('alpha.themes.dashboard')

dashboard.section.header.val = {
    [[                                                                       ]],
    [[                                                                     ]],
    [[       ████ ██████           █████      ██                     ]],
    [[      ███████████             █████                             ]],
    [[      █████████ ███████████████████ ███   ███████████   ]],
    [[     █████████  ███    █████████████ █████ ██████████████   ]],
    [[    █████████ ██████████ █████████ █████ █████ ████ █████   ]],
    [[  ███████████ ███    ███ █████████ █████ █████ ████ █████  ]],
    [[ ██████  █████████████████████ ████ █████ █████ ████ ██████ ]],
    [[                                                                       ]],
}
dashboard.section.header.opts.hl = 'AlphaHeader'

local function button(sc, txt, leader_txt, keybind, keybind_opts)
    local sc_after = sc:gsub('%s', ''):gsub(leader_txt, '<leader>')

    local opts = {
        position = 'center',
        shortcut = sc,
        cursor = 5,
        width = 36,
        align_shortcut = 'right',
        hl_shortcut = 'AlphaShortcut',
    }

    if nil == keybind then
        keybind = sc_after
    end

    keybind_opts = vim.F.if_nil(keybind_opts, { noremap = true, silent = true, nowait = true })
    opts.keymap = { 'n', sc_after, keybind, keybind_opts }

    local function on_press()
        local key = vim.api.nvim_replace_termcodes(sc_after .. '<Ignore>', true, false, true)
        vim.api.nvim_feedkeys(key, 't', false)
    end

    return {
        type = 'button',
        val = txt,
        on_press = on_press,
        opts = opts,
    }
end

local leader = ' '
dashboard.section.buttons.val = {
    button('space f f', '  Find File  ', leader, ':Telescope find_files<CR>'),
    button('space f h', '󰗹  Find Hidden File  ', leader, ':Telescope find_files hidden=true no_ignore=true<CR>'),
    button('space f o', '󱋡  Recent File  ', leader, ':Telescope oldfiles<CR>'),
    button('space f w', '󱀽  Find Word  ', leader, ':Telescope live_grep<CR>'),
    button('space f n', '󱇧  New File  ', leader, ':ene <BAR> startinsert <CR>'),
    button('space n', '  Settings', leader, ':e $MYVIMRC | :cd %:p:h <CR>'),
    button('space l', '󰒲  Lazy', leader, ':Lazy<CR>'),
    button('space q', '  Quit', leader, ':qa<CR>'),
}
dashboard.section.buttons.opts.hl = 'String'

local function footer()
    local stats = require('lazy').stats()
    local ms = (math.floor(stats.startuptime * 100 + 0.5) / 100)
    return '   Have fun with Neovim' .. '  󱐋 Neovim loaded ' .. stats.count .. ' plugins in ' .. ms .. 'ms'
end

dashboard.section.footer.val = footer()
dashboard.section.footer.opts.hl = 'AlphaFooter'

local head_butt_padding = 2
local occu_height = #dashboard.section.header.val + 2 * #dashboard.section.buttons.val + head_butt_padding
local header_padding = math.max(0, math.ceil((vim.fn.winheight('$') - occu_height) * 0.40))
local foot_butt_padding = 1

dashboard.config.layout = {
    { type = 'padding', val = header_padding },
    dashboard.section.header,
    { type = 'padding', val = head_butt_padding },
    dashboard.section.buttons,
    { type = 'padding', val = foot_butt_padding },
    dashboard.section.footer,
}

alpha.setup(dashboard.opts)

vim.api.nvim_create_autocmd('User', {
    pattern = 'LazyVimStarted',
    callback = function()
        dashboard.section.footer.val = footer()
        pcall(vim.cmd.AlphaRedraw)
    end,
})