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local _ = require "mason-core.functional"
local process = require "mason-core.process"
local path = require "mason-core.path"
local Result = require "mason-core.result"
local spawn = require "mason-core.spawn"
local Optional = require "mason-core.optional"
local installer = require "mason-core.installer"
local platform = require "mason-core.platform"
local M = {}
---@param install_dir string
local function env(install_dir)
return {
GEM_HOME = install_dir,
GEM_PATH = install_dir,
PATH = process.extend_path { path.concat { install_dir, "bin" } },
}
end
local create_bin_path = _.compose(path.concat, function(executable)
return _.append(executable, { "bin" })
end, _.if_else(_.always(platform.is.win), _.format "%s.bat", _.identity))
---@async
---@param executable string
local function link_executable(executable)
local ctx = installer.context()
local bin_path = create_bin_path(executable)
ctx:link_bin(
executable,
ctx:write_shell_exec_wrapper(executable, path.concat { ctx.package:get_install_path(), bin_path }, {
GEM_PATH = platform.when {
unix = function()
return ("%s:$GEM_PATH"):format(ctx.package:get_install_path())
end,
win = function()
return ("%s;%%GEM_PATH%%"):format(ctx.package:get_install_path())
end,
},
})
)
end
---@param packages string[]
local function with_receipt(packages)
return function()
local ctx = installer.context()
ctx.receipt:with_primary_source(ctx.receipt.gem(packages[1]))
for i = 2, #packages do
ctx.receipt:with_secondary_source(ctx.receipt.gem(packages[i]))
end
end
end
---@async
---@param packages { [number]: string, bin: string[]? } The Gem packages to install. The first item in this list will be the recipient of the requested version, if set.
function M.packages(packages)
return function()
return M.install(packages).with_receipt()
end
end
---@async
---@param packages { [number]: string, bin: string[]? } The Gem packages to install. The first item in this list will be the recipient of the requested version, if set.
function M.install(packages)
local ctx = installer.context()
local pkgs = _.list_copy(packages or {})
ctx.requested_version:if_present(function(version)
pkgs[1] = ("%s:%s"):format(pkgs[1], version)
end)
ctx.spawn.gem {
"install",
"--no-user-install",
"--install-dir=.",
"--bindir=bin",
"--no-document",
pkgs,
env = {
GEM_HOME = ctx.cwd:get(),
},
}
if packages.bin then
_.each(link_executable, packages.bin)
end
return {
with_receipt = with_receipt(packages),
}
end
---@alias GemOutdatedPackage {name:string, current_version: string, latest_version: string}
---Parses a string input like "package (0.1.0 < 0.2.0)" into its components
---@param outdated_gem string
---@return GemOutdatedPackage
function M.parse_outdated_gem(outdated_gem)
local package_name, version_expression = outdated_gem:match "^(.+) %((.+)%)"
if not package_name or not version_expression then
-- unparsable
return nil
end
local current_version, latest_version = unpack(vim.split(version_expression, "<"))
---@type GemOutdatedPackage
local outdated_package = {
name = vim.trim(package_name),
current_version = vim.trim(current_version),
latest_version = vim.trim(latest_version),
}
return outdated_package
end
---Parses the stdout of the `gem list` command into a table<package_name, version>
---@param output string
function M.parse_gem_list_output(output)
---@type table<string, string>
local gem_versions = {}
for _, line in ipairs(vim.split(output, "\n")) do
local gem_package, version = line:match "^(%S+) %((%S+)%)$"
if gem_package and version then
gem_versions[gem_package] = version
end
end
return gem_versions
end
local function not_empty(s)
return s ~= nil and s ~= ""
end
---@async
---@param receipt InstallReceipt<InstallReceiptPackageSource>
---@param install_dir string
function M.check_outdated_primary_package(receipt, install_dir)
if receipt.primary_source.type ~= "gem" then
return Result.failure "Receipt does not have a primary source of type gem"
end
return spawn.gem({ "outdated", cwd = install_dir, env = env(install_dir) }):map_catching(function(result)
---@type string[]
local lines = vim.split(result.stdout, "\n")
local outdated_gems = vim.tbl_map(M.parse_outdated_gem, vim.tbl_filter(not_empty, lines))
local outdated_gem = _.find_first(function(gem)
return gem.name == receipt.primary_source.package and gem.current_version ~= gem.latest_version
end, outdated_gems)
return Optional.of_nilable(outdated_gem)
:map(function(gem)
return {
name = receipt.primary_source.package,
current_version = assert(gem.current_version, "current_version missing in gem"),
latest_version = assert(gem.latest_version, "latest_version missing in gem"),
}
end)
:or_else_throw "Primary package is not outdated."
end)
end
---@async
---@param receipt InstallReceipt<InstallReceiptPackageSource>
---@param install_dir string
function M.get_installed_primary_package_version(receipt, install_dir)
return spawn
.gem({
"list",
cwd = install_dir,
env = env(install_dir),
})
:map_catching(function(result)
local gems = M.parse_gem_list_output(result.stdout)
return Optional.of_nilable(gems[receipt.primary_source.package])
:or_else_throw "Failed to find gem package version."
end)
end
return M
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