feat: build class to generate json schemas

lua/lsp-settings/build.lua

@@ -0,0 +1,63 @@
+local util = require("lsp-settings.util")
+
+local M = {}
+
+function M.get_schema(package_json)
+  local json = util.json_decode(util.fetch(package_json)) or {}
+  local config = json.contributes and json.contributes.configuration or json.properties and json
+
+  local properties = {}
+
+  if vim.tbl_islist(config) then
+    for _, c in pairs(config) do
+      vim.list_extend(properties, c.properties)
+    end
+  elseif config.properties then
+    properties = config.properties
+  end
+  return {
+    ["$schema"] = "http://json-schema.org/draft-07/schema#",
+    description = json.description,
+    properties = properties,
+  }
+end
+
+function M.clean()
+  ---@diagnostic disable-next-line: param-type-mismatch
+  for _, f in pairs(vim.fn.expand("schemas/*.json", false, true)) do
+    vim.loop.fs_unlink(f)
+  end
+end
+
+function M.update_index()
+  local url = "https://gist.githubusercontent.mirror.nvdadr.com/williamboman/a01c3ce1884d4b57cc93422e7eae7702/raw/lsp-packages.json"
+  local index = util.fetch(url)
+  util.write_file("schemas/index.json", index)
+  util.write_file("lua/lsp-settings/schemas.lua", "return " .. vim.inspect(util.json_decode(index)))
+end
+
+function M.index()
+  return util.json_decode(util.read_file("schemas/index.json"))
+end
+
+function M.update_schemas()
+  for name, url in pairs(M.index()) do
+    print(("Generating schema for %s"):format(name))
+    local schema_file = ("schemas/%s.json"):format(name)
+
+    if not (util.exists(schema_file) and os.time() - util.mtime(schema_file) < 3600) then
+      local schema = M.get_schema(url)
+      util.write_file(schema_file, vim.fn.json_encode(schema))
+    end
+  end
+end
+
+function M.build()
+  -- M.clean()
+  M.update_index()
+  M.update_schemas()
+end
+
+M.build()
+
+return M