more stuff too lazy to seperate

lua/core/theme.lua

@@ -0,0 +1,76 @@
+local pickers = require("telescope.pickers")
+local finders = require("telescope.finders")
+local previewers = require("telescope.previewers")
+local conf = require("telescope.config").values
+local actions = require("telescope.actions")
+local action_set = require("telescope.actions.set")
+local action_state = require("telescope.actions.state")
+local misc = require('core.misc')
+
+local M = {}
+
+function M.switcher()
+  local bufnr = vim.api.nvim_get_current_buf()
+
+  -- show current buffer content in previewer
+  local colors = vim.fn.getcompletion('', 'color')
+  for k, v in pairs(colors) do
+    if v.find(v, '.ext') then
+      table.remove(colors, k)
+      break
+    end
+  end
+
+  -- our picker function: colors
+  pickers.new({
+    prompt_title = "Set Nvim Colorscheme",
+    finder = finders.new_table { results = colors },
+    sorter = conf.generic_sorter(),
+    previewer = previewers.new_buffer_previewer {
+      define_preview = function(self, entry)
+        -- add content
+        local lines = vim.api.nvim_buf_get_lines(bufnr, 0, -1, false)
+        vim.api.nvim_buf_set_lines(self.state.bufnr, 0, -1, false, lines)
+
+        -- add syntax highlighting in previewer
+        local ft = (vim.filetype.match { buf = bufnr } or "diff"):match "%w+"
+        require("telescope.previewers.utils").highlighter(self.state.bufnr, ft)
+      end
+    },
+
+    attach_mappings = function(prompt_bufnr, map)
+      -- reload theme while typing
+      vim.schedule(function()
+        vim.api.nvim_create_autocmd("TextChangedI", {
+          buffer = prompt_bufnr,
+          callback = function()
+            if action_state.get_selected_entry() then
+              misc.colorscheme(action_state.get_selected_entry()[1])
+            end
+          end,
+        })
+      end)
+
+      -- reload theme on cycling
+      actions.move_selection_previous:replace(function()
+        action_set.shift_selection(prompt_bufnr, -1)
+        misc.colorscheme(action_state.get_selected_entry()[1])
+      end)
+      actions.move_selection_next:replace(function()
+        action_set.shift_selection(prompt_bufnr, 1)
+        misc.colorscheme(action_state.get_selected_entry()[1])
+      end)
+
+      -- reload theme on selection
+      actions.select_default:replace(function()
+        if action_state.get_selected_entry() then
+          actions.close(prompt_bufnr)
+          misc.colorscheme(action_state.get_selected_entry()[1])
+        end
+      end)
+      return true
+    end,
+  }):find()
+end
+
+return M