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path: root/lua/config/statusline.lua
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-- Statusline nativa (reemplaza lualine.nvim), con la paleta de config.native-colorscheme.
local M = {}

local colors = require("config.native-colorscheme").colors

local mode_names = {
  n = "NORMAL",
  no = "O-PENDING",
  nt = "NORMAL",
  v = "VISUAL",
  V = "V-LINE",
  ["\22"] = "V-BLOCK",
  s = "SELECT",
  S = "S-LINE",
  ["\19"] = "S-BLOCK",
  i = "INSERT",
  R = "REPLACE",
  Rv = "V-REPLACE",
  c = "COMMAND",
  cv = "EX",
  r = "PROMPT",
  ["r?"] = "CONFIRM",
  ["!"] = "SHELL",
  t = "TERMINAL",
}

local mode_hl = {
  n = "StlModeNormal",
  i = "StlModeInsert",
  v = "StlModeVisual",
  V = "StlModeVisual",
  ["\22"] = "StlModeVisual",
  s = "StlModeVisual",
  S = "StlModeVisual",
  c = "StlModeCommand",
  R = "StlModeReplace",
  r = "StlModeReplace",
  t = "StlModeTerminal",
  ["!"] = "StlModeTerminal",
}

function M.set_highlights()
  local hl = function(name, fg, bg, bold)
    vim.api.nvim_set_hl(0, name, { fg = fg, bg = bg, bold = bold ~= false })
  end
  hl("StlModeIcon", colors.base4, colors.base03)
  hl("StlModeNormal", colors.blue100, colors.base03)
  hl("StlModeInsert", colors.green100, colors.base03)
  hl("StlModeVisual", colors.magenta100, colors.base03)
  hl("StlModeCommand", colors.yellow100, colors.base03)
  hl("StlModeReplace", colors.red100, colors.base03)
  hl("StlModeTerminal", colors.orange100, colors.base03)
  hl("StlBranch", colors.orange100, colors.base03)
  hl("StlDiffAdd", colors.green300, colors.base03)
  hl("StlDiffChange", colors.yellow300, colors.base03)
  hl("StlDiffDelete", colors.red300, colors.base03)
  hl("StlFile", colors.yellow100, colors.base03)
  hl("StlDiagError", colors.red300, colors.base03)
  hl("StlDiagWarn", colors.yellow300, colors.base03)
  hl("StlDiagInfo", colors.blue300, colors.base03)
  hl("StlDiagHint", colors.cyan300, colors.base03)
  hl("StlUpdates", colors.orange300, colors.bg_statusline, false)
  hl("StlLsp", colors.base4, colors.base03)
  hl("StlFt", colors.magenta100, colors.base03)
  hl("StlProgress", colors.cyan100, colors.base03)
  hl("StlSep", colors.base00, colors.base03, false)
  hl("StlBg", colors.fg, colors.bg_statusline, false)
end

-- Handlers de click (:h 'statusline' %@); globales porque %@ necesita un nombre simple.
function _G.StlClickFile()
  Snacks.picker.files()
end

function _G.StlClickDiag()
  Snacks.picker.diagnostics()
end

local function filename()
  local name = vim.api.nvim_buf_get_name(0)
  if name == "" then
    return "[Sin nombre]"
  end
  local file = vim.fn.fnamemodify(name, ":t")
  local parent = vim.fn.fnamemodify(name, ":h:t")
  return parent .. "/" .. file
end

local function git()
  local out = {}
  -- vim.b para el repo del buffer; vim.g como fallback (repo del cwd, ej. en oil)
  local head = vim.b.gitsigns_head or vim.g.gitsigns_head
  if head and head ~= "" then
    out[#out + 1] = "%#StlBranch# " .. head
  end
  local status = vim.b.gitsigns_status_dict
  if status then
    if (status.added or 0) > 0 then
      out[#out + 1] = "%#StlDiffAdd#  " .. status.added
    end
    if (status.changed or 0) > 0 then
      out[#out + 1] = "%#StlDiffChange#  " .. status.changed
    end
    if (status.removed or 0) > 0 then
      out[#out + 1] = "%#StlDiffDelete#  " .. status.removed
    end
  end
  if #out == 0 then
    return ""
  end
  return table.concat(out)
end

local diag_specs = {
  { vim.diagnostic.severity.ERROR, "StlDiagError", " " },
  { vim.diagnostic.severity.WARN, "StlDiagWarn", " " },
  { vim.diagnostic.severity.INFO, "StlDiagInfo", " " },
  { vim.diagnostic.severity.HINT, "StlDiagHint", "󰠠 " },
}

local function diagnostics()
  local counts = vim.diagnostic.count(0)
  local parts = {}
  for _, spec in ipairs(diag_specs) do
    local n = counts[spec[1]]
    if n and n > 0 then
      parts[#parts + 1] = "%#" .. spec[2] .. "#" .. spec[3] .. n
    end
  end
  if #parts == 0 then
    return ""
  end
  return "%@v:lua.StlClickDiag@" .. table.concat(parts, " ") .. "%X "
end

local function lsp_clients()
  local clients = vim.lsp.get_clients { bufnr = 0 }
  if #clients == 0 then
    return "No LSP"
  end
  local names = {}
  for _, client in ipairs(clients) do
    names[#names + 1] = client.name
  end
  return table.concat(names, ",")
end

local function lazy_updates()
  local ok, status = pcall(require, "lazy.status")
  if ok and status.has_updates() then
    return "%#StlUpdates#" .. status.updates() .. "  "
  end
  return ""
end

local function filetype()
  local ft = vim.bo.filetype
  if ft == "" then
    return ""
  end
  local ok, mini = pcall(require, "mini.icons")
  if ok then
    local ok_get, icon, icon_hl = pcall(mini.get, "filetype", ft)
    if ok_get and icon then
      return "%#" .. icon_hl .. "#" .. icon .. " %#StlFt#" .. ft .. "  "
    end
  end
  return "%#StlFt#" .. ft .. "  "
end

-- Como el componente 'progress' de lualine: Top / Bot / porcentaje
local function progress()
  local cur = vim.fn.line "."
  local total = vim.fn.line "$"
  if cur == 1 then
    return "Top"
  elseif cur == total then
    return "Bot"
  end
  return string.format("%2d%%%%", math.floor(cur / total * 100))
end

function M.render()
  local mode = vim.api.nvim_get_mode().mode
  local hl = mode_hl[mode:sub(1, 1)] or "StlModeNormal"
  local name = mode_names[mode] or mode_names[mode:sub(1, 1)] or mode
  local left = vim.tbl_filter(function(s)
    return s ~= ""
  end, {
    "%#StlModeIcon#  %#" .. hl .. "#" .. name,
    git(),
    "%#StlFile#%@v:lua.StlClickFile@ " .. filename() .. "%X",
  })

  return table.concat(left, "%#StlSep# │ ") .. table.concat {
    " %#StlBg#%=",
    diagnostics(),
    lazy_updates(),
    "%#StlLsp#", lsp_clients(), "  ",
    filetype(),
    "%#StlProgress#", progress(), "  ",
  }
end

function M.setup()
  M.set_highlights()
  vim.api.nvim_create_autocmd("ColorScheme", {
    group = vim.api.nvim_create_augroup("native_statusline", { clear = true }),
    callback = M.set_highlights,
  })
  vim.o.statusline = "%!v:lua.require'config.statusline'.render()"
end

return M