View the planets (#12)

* add planets viewer builtin

* Remove print statement

* Don't use fzf & echo

* Add all planets as files and refactor accordingly

* Remove planets.lua

* add the moon

* example ofe how to do this without ls everywhere

* fix rebase and update to new style

Co-authored-by: TJ DeVries <devries.timothyj@gmail.com>

lua/telescope/builtin.lua

@@ -426,4 +426,45 @@ builtin.treesitter = function(opts)
   }):find()
 end
 
+builtin.planets = function(opts)
+  opts = opts or {}
+  local show_pluto = opts.show_pluto or false
+
+  local sourced_file = require('plenary.debug_utils').sourced_filepath()
+  local base_directory = vim.fn.fnamemodify(sourced_file, ":h:h:h")
+
+  local globbed_files = vim.fn.globpath(base_directory .. '/data/memes/planets/', '*', true, true)
+  local acceptable_files = {}
+  for _, v in ipairs(globbed_files) do
+    if not show_pluto and v:find("pluto") then
+    else
+      table.insert(acceptable_files,vim.fn.fnamemodify(v, ':t'))
+    end
+  end
+
+  pickers.new {
+    prompt = 'Planets',
+    finder = finders.new_table {
+      results = acceptable_files,
+      entry_maker = function(line)
+        return {
+          ordinal = line,
+          display = line,
+          filename = base_directory .. '/data/memes/planets/' .. line,
+        }
+      end
+    },
+    previewer = previewers.cat.new(opts),
+    sorter = sorters.get_norcalli_sorter(),
+    attach_mappings = function(prompt_bufnr, map)
+      map('i', '<CR>', function()
+        local selection = actions.get_selected_entry(prompt_bufnr)
+        actions.close(prompt_bufnr)
+
+        print("Enjoy astronomy! You viewed:", selection.display)
+      end)
+    end,
+  }:find()
+end
+
 return builtin

lua/telescope/finders.lua

@@ -120,6 +120,8 @@ function JobFinder:_find(prompt, process_result, process_complete)
 
     maximum_results = self.maximum_results,
 
+    writer = opts.writer and Job:new(opts.writer) or nil,
+
     on_stdout = on_output,
     on_stderr = on_output,
 

lua/telescope/previewers.lua

@@ -12,6 +12,7 @@ Previewer.__index = Previewer
 
 local bat_options = " --style=grid --paging=always "
 local previewer_ns = vim.api.nvim_create_namespace('telescope.previewers')
+
 --  --terminal-width=%s
 
 -- TODO: We shoudl make sure that all our terminals close all the way.
@@ -317,6 +318,21 @@ previewers.help = defaulter(function(_)
   }
 end, {})
 
+previewers.planet_previewer = previewers.new {
+  preview_fn = function(self, entry, status)
+    local bufnr = vim.api.nvim_create_buf(false, true)
+
+    vim.api.nvim_win_set_buf(status.preview_win, bufnr)
+
+    local termopen_command = "bat " .. entry.value
+
+    -- HACK! Requires `termopen` to accept buffer argument.
+    vim.cmd(string.format("noautocmd call win_gotoid(%s)", status.preview_win))
+    vim.fn.termopen(termopen_command)
+    vim.cmd(string.format("noautocmd call win_gotoid(%s)", status.prompt_win))
+  end
+}
+
 previewers.Previewer = Previewer
 
 return previewers