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local registry = require "mason-registry"
local a = require "mason-core.async"
local _ = require "mason-core.functional"
local installer = require "mason-core.installer"
local InstallationHandle = require "mason-core.installer.handle"
local Optional = require "mason-core.optional"
local log = require "mason-core.log"
local EventEmitter = require "mason-core.EventEmitter"
local receipt = require "mason-core.receipt"
local fs = require "mason-core.fs"
local path = require "mason-core.path"
local linker = require "mason-core.installer.linker"
local version_checks = require "mason-core.package.version-check"
---@class Package : EventEmitter
---@field name string
---@field spec PackageSpec
---@field private handle InstallHandle The currently associated handle.
local Package = setmetatable({}, { __index = EventEmitter })
---@param package_identifier string
---@return string, string?
Package.Parse = function(package_identifier)
local name, version = unpack(vim.split(package_identifier, "@"))
return name, version
end
---@alias PackageLanguage string
---@type table<PackageLanguage, PackageLanguage>
Package.Lang = setmetatable({}, {
__index = function(s, lang)
s[lang] = lang
return s[lang]
end,
})
---@enum PackageCategory
Package.Cat = {
Compiler = "Compiler",
Runtime = "Runtime",
DAP = "DAP",
LSP = "LSP",
Linter = "Linter",
Formatter = "Formatter",
}
local PackageMt = { __index = Package }
---@class PackageSpec
---@field name string
---@field desc string
---@field homepage string
---@field categories PackageCategory[]
---@field languages PackageLanguage[]
---@field install async fun(ctx: InstallContext)
---@param spec PackageSpec
function Package.new(spec)
vim.validate {
name = { spec.name, "s" },
desc = { spec.desc, "s" },
homepage = { spec.homepage, "s" },
categories = { spec.categories, "t" },
languages = { spec.languages, "t" },
install = { spec.install, "f" },
}
return EventEmitter.init(setmetatable({
name = spec.name, -- for convenient access
spec = spec,
}, PackageMt))
end
function Package:new_handle()
self:get_handle():if_present(function(handle)
assert(handle:is_closed(), "Cannot create new handle because existing handle is not closed.")
end)
log.fmt_trace("Creating new handle for %s", self)
local handle = InstallationHandle.new(self)
self.handle = handle
self:emit("handle", handle)
return handle
end
---@param opts { version: string? }?
---@return InstallHandle
function Package:install(opts)
opts = opts or {}
return self
:get_handle()
:map(function(handle)
if not handle:is_closed() then
log.fmt_debug("Handle %s already exist for package %s", handle, self)
return handle
end
end)
:or_else_get(function()
local handle = self:new_handle()
-- This function is not expected to be run in async scope, so we create
-- a new scope here and handle the result callback-style.
a.run(
function(...)
-- we wrap installer.execute for testing purposes (to allow spy objects)
return installer.execute(...)
end,
---@param success boolean
---@param result Result
function(success, result)
if not success then
log.error("Unexpected error", result)
self:emit("install:failed", handle)
return
end
result
:on_success(function()
self:emit("install:success", handle)
registry:emit("package:install:success", self, handle)
end)
:on_failure(function()
self:emit("install:failed", handle)
registry:emit("package:install:failed", self, handle)
end)
end,
handle,
{
requested_version = opts.version,
}
)
return handle
end)
end
function Package:uninstall()
local was_unlinked = self:unlink()
if was_unlinked then
self:emit "uninstall:success"
end
return was_unlinked
end
function Package:unlink()
log.fmt_trace("Unlinking %s", self)
local install_path = self:get_install_path()
-- 1. Unlink
self:get_receipt():map(_.prop "links"):if_present(function(links)
linker.unlink(self, links)
end)
-- 2. Remove installation artifacts
if fs.sync.dir_exists(install_path) then
fs.sync.rmrf(install_path)
return true
end
return false
end
function Package:is_installed()
return registry.is_installed(self.name)
end
function Package:get_handle()
return Optional.of_nilable(self.handle)
end
function Package:get_install_path()
return path.package_prefix(self.name)
end
---@return Optional # Optional<InstallReceipt>
function Package:get_receipt()
local receipt_path = path.concat { self:get_install_path(), "mason-receipt.json" }
if fs.sync.file_exists(receipt_path) then
return Optional.of(receipt.InstallReceipt.from_json(vim.json.decode(fs.sync.read_file(receipt_path))))
end
return Optional.empty()
end
---@param callback fun(success: boolean, version_or_err: string)
function Package:get_installed_version(callback)
a.run(function()
local receipt = self:get_receipt():or_else_throw "Unable to get receipt."
return version_checks.get_installed_version(receipt, self:get_install_path()):get_or_throw()
end, callback)
end
---@param callback fun(success: boolean, result_or_err: NewPackageVersion)
function Package:check_new_version(callback)
a.run(function()
local receipt = self:get_receipt():or_else_throw "Unable to get receipt."
return version_checks.get_new_version(receipt, self:get_install_path()):get_or_throw()
end, callback)
end
function Package:get_lsp_settings_schema()
local ok, schema = pcall(require, ("mason-schemas.lsp.%s"):format(self.name))
if not ok then
return Optional.empty()
end
return Optional.of(schema)
end
function PackageMt.__tostring(self)
return ("Package(name=%s)"):format(self.name)
end
return Package
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