note
	description: "Installation command."
	date: "$Date$"
	revision: "$Revision$"

class
	ROC_INSTALL_COMMAND

inherit
	ROC_COMMAND

create
	make

feature -- Access

	help: STRING_32
		once
			Result := "[--module|-m <MODULE_PATH>] [(--dir|-d <CMS_PATH>) | <MODULE_NAME>] [--site-dir <CMS_SITE_PATH>]"
		end

feature -- Status report

	is_valid (args:	ARRAY [READABLE_STRING_32]): BOOLEAN
			-- Is the submitted install command valid?
		local
			i, n: INTEGER
			optional_module: BOOLEAN
			cms_path: BOOLEAN
		do
			n := args.upper
				-- TODO add error reporting.
			if n >= 1 and then n <= 4 then
				from
					i := 1
				until
					i > n
				loop
					if args [i].same_string ("-m") then
						optional_module := True
					elseif args [i].same_string ("--module") then
						optional_module := True
					elseif args [i].same_string ("-d") then
						cms_path := True
					elseif args [i].same_string ("--dir") then
						cms_path := True
					end
					i := i + 1
				end
				if n = 4 then
					if (cms_path and optional_module) then
							-- valid command
						Result := True
					else
						print ("Error check the optional argument --module|-m and --dir|-d")
					end
				elseif n = 2 then
					if (cms_path and not optional_module) then
						Result := True
					else
						print ("Error missing value for dir")
						Result := False
					end
				else
					Result := True
				end
			else
				Result := False
				if n > 4 then
					print ("Too many arguments")
				end
				if n < 1 then
					print ("Too few argumetns")
				end
			end
		end

feature -- Helpers

	module_name (a_path: PATH): STRING_32
		do
				-- FIXME: better implementation needed. Either based on "a" new module.info file, or parsing the .ecf
			if attached a_path.entry as e then
				Result := e.name
			else
				Result := a_path.name
			end
		end

feature -- Execution

	execute (args: ARRAY [READABLE_STRING_32])
			-- Install a module into a cms application.
			-- Pattern: module_src/site/* => cms/site/modules/$module_name/*
		local
			l_site_path, l_cms_path, l_module_source_path: detachable PATH
			l_site_dir: DIRECTORY
			l_modules_dir: DIRECTORY
			l_dest_dir: DIRECTORY
			i,n: INTEGER
		do
			from
				i := 1
				n := args.upper
			until
				i > n
			loop
				if attached args[i] as arg then
					if
						arg.same_string ("-d")
						or arg.same_string ("--dir")
					then
						i := i + 1
						if i <= n then
							create l_cms_path.make_from_string (args[i])
						end
					elseif
						arg.same_string ("--site-dir")
					then
						i := i + 1
						if i <= n then
							create l_site_path.make_from_string (args[i])
						end
					elseif
						arg.same_string ("-m")
						or arg.same_string ("--module")
					then
						i := i + 1
						if i <= n then
							create l_module_source_path.make_from_string (args[i])
						end
					end
				end
				i := i + 1
			end
			if l_module_source_path = Void then
				l_module_source_path := Execution_environment.current_working_path
			end
			if l_cms_path = Void then
				l_cms_path := Execution_environment.current_working_path.extended ("modules")
			end
			if l_cms_path /= Void and l_module_source_path /= Void then
					-- If l_site_path is not set; initialize it to $cms_path/site.
				if l_site_path = Void then
					l_site_path := l_cms_path.extended ("site")
				end

					-- Install configuration files.
				if attached module_name (l_module_source_path) as l_mod_name then
					create l_site_dir.make_with_path (l_site_path)

					if l_site_dir.exists then
						create l_modules_dir.make_with_path (l_site_path.extended ("modules"))
						if not l_modules_dir.exists then
							l_modules_dir.create_dir
						end

					    create l_dest_dir.make_with_path (l_modules_dir.path.extended (l_mod_name))
						if not l_dest_dir.exists then
							l_dest_dir.create_dir
						end
						install_module_elements (l_module_source_path, l_dest_dir.path, Void)
--					   	install_module_elements (l_module_source_path, l_dest_dir.path, Config_dir)
--						install_module_elements (l_module_source_path, l_dest_dir.path, Scripts_dir)
--						install_module_elements (l_module_source_path, l_dest_dir.path, Themes_dir)
						print ("Module ")
						print (l_mod_name)
						print (" was successfuly installed to the CMS Application location ")
						print (l_cms_path.name)
						print ("%NCheck the module elements at ")
						print (l_dest_dir.path.name)
						print (".%N")
						print ("Copied " + directories_count.out + " directories.%N")
						print ("Copied " + files_count.out + " files.%N")
					else
						print ({STRING_32} "The CMS Application located at " + l_cms_path.name + "does not have the site or modules folders.%N")
					end
				else
					print ("Error: not possible to retrieve module name.%N")
				end
			else
				print ("Error: wrong path to CMS application.%N")
			end
		end

	install_module_elements (a_module_source_path: PATH; a_cms_module_target_path: PATH; a_element: detachable READABLE_STRING_GENERAL)
			-- Install module site files from `a_module_source_path' to cms application `a_cms_module_target_path' under expected modules folder.
			-- If `a_element' is set, take into account only sub folder `a_element'.
		local
			l_path: PATH
			l_dest_dir: DIRECTORY
			l_src_dir: DIRECTORY
		do
			l_path := a_module_source_path.extended ("site")
			if a_element /= Void then
					-- Copy all files under "site/$a_element" into "site/modules/$module_name/$a_element" location.
				create l_src_dir.make_with_path (l_path.extended (a_element))
				create l_dest_dir.make_with_path (a_cms_module_target_path.extended (a_element))
			else
					-- Copy all files under "site" into "site/modules/$module_name/" location.
				create l_src_dir.make_with_path (l_path)
				create l_dest_dir.make_with_path (a_cms_module_target_path)
			end
			if not l_dest_dir.exists then
				l_dest_dir.create_dir
			end
			files_count := 0
			directories_count := -1
			copy_directory (l_src_dir, l_dest_dir, True)
		end

	files_count: INTEGER
			-- Number of copied files during installation.

	directories_count: INTEGER
			-- Number of copied directories during installation.

feature {NONE} -- System/copy files

	copy_directory (a_src: DIRECTORY; a_dest: DIRECTORY; is_recursive: BOOLEAN)
			-- Copy all elements from `a_src' to `a_dest'.
		local
			l_dir: DIRECTORY
			l_new_dir: DIRECTORY
			entry: PATH
			l_path: PATH
			l_file: FILE
			ut: FILE_UTILITIES
		do
			directories_count := directories_count + 1
			across
				a_src.entries as ic
			loop
				entry := ic.item
				if not (entry.is_current_symbol or else entry.is_parent_symbol) then
					l_path := a_src.path.extended_path (entry)
					create {RAW_FILE} l_file.make_with_path (l_path)
					if not l_file.is_directory then
						copy_file_in_directory (l_file, a_dest.path)
					elseif is_recursive then
						create l_dir.make_with_path (l_path)
						create l_new_dir.make_with_path (a_dest.path.extended_path (entry))
						ut.create_directory_path (l_new_dir.path)
						if l_dir.exists then
							copy_directory (l_dir, l_new_dir, is_recursive)
						end
					end
				end
			end
		end

	copy_file_in_directory (a_file: FILE; a_dir: PATH)
			-- Copy file `a_file' to dir `a_dir'.
		local
			retried: BOOLEAN
			l_dest: RAW_FILE
		do
			if not retried then
				if attached a_file.path.entry as e then
					create l_dest.make_with_path (a_dir.extended_path (e))
					l_dest.create_read_write
					a_file.open_read
						-- Copy file source to destination
					if
						l_dest.exists and then
						l_dest.is_writable and then
						a_file.exists and then
						a_file.is_readable
					then
						a_file.copy_to (l_dest)
						a_file.close
						l_dest.close
						files_count := files_count + 1
					end
				end
			end
		rescue
			retried := True
			retry
		end

--feature -- Constants

--	Config_dir: STRING = "config"
--			-- Configuration dir.

--	Scripts_dir: STRING = "scripts"
--			-- Scripts dir.

--	Themes_dir: STRING = "themes"
--			-- Themes dir.


note
	copyright: "2011-2015, Jocelyn Fiat, Javier Velilla, Eiffel Software and others"
	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
end