minetest-mods/mail/migrate.lua

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Lua
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2024-01-24 18:04:01 +01:00
local STORAGE_VERSION_KEY = "@@version"
local function migrate_v1_to_v3()
local file = io.open(minetest.get_worldpath().."/mail.db", "r")
assert(file)
print("[mail] Migration from v1 to v3 database")
local data = file:read("*a")
local oldmails = minetest.deserialize(data)
file:close()
for name, oldmessages in pairs(oldmails) do
print("[mail,v1] + migrating player '" .. name .. "'")
local entry = mail.get_storage_entry(name)
for _, msg in ipairs(oldmessages) do
table.insert(entry.inbox, {
id = mail.new_uuid(),
from = msg.sender or msg.from,
to = msg.to or name,
subject = msg.subject,
body = msg.body,
time = msg.time or os.time(),
})
end
mail.set_storage_entry(name, entry)
end
-- rename file
print("[mail,v1] migration done, renaming old mail.db")
os.rename(minetest.get_worldpath().."/mail.db", minetest.get_worldpath().."/mail.db.old")
end
local function read_json_file(path)
local file = io.open(path, "r")
local content = {}
if file then
local json = file:read("*a")
content = minetest.parse_json(json or "[]") or {}
file:close()
end
return content
end
-- migrate from v2 to v3 database
local function migrate_v2_to_v3()
local maildir = minetest.get_worldpath().."/mails"
minetest.mkdir(maildir) -- if necessary (eg. first login)
print("[mail] Migration from v2 to v3 database")
-- defer execution until auth-handler ready (first server-step)
minetest.after(0, function()
for playername, _ in minetest.get_auth_handler().iterate() do
local entry = mail.get_storage_entry(playername)
local player_contacts = read_json_file(maildir .. "/contacts/" .. playername .. ".json")
for _, c in pairs(player_contacts) do
table.insert(entry.contacts, { name = c.name, note = c.note })
end
local saneplayername = string.gsub(playername, "[.|/]", "")
local player_inbox = read_json_file(maildir .. "/" .. saneplayername .. ".json")
print("[mail,v2] + migrating player '" .. playername .. "'")
for _, msg in ipairs(player_inbox) do
table.insert(entry.inbox, {
id = mail.new_uuid(),
from = msg.sender or msg.from,
to = msg.to or playername,
cc = msg.cc,
subject = msg.subject,
body = msg.body,
time = msg.time or os.time(),
read = not msg.unread,
})
end
mail.set_storage_entry(playername, entry)
end
print("[mail,v2] migration done")
end)
end
function mail.migrate()
-- check for v2 storage first, v1-migration might have set the v3-flag already
local version = mail.storage:get_int(STORAGE_VERSION_KEY)
if version < 3 then
-- v2 to v3
migrate_v2_to_v3()
mail.storage:set_int(STORAGE_VERSION_KEY, 3)
end
-- check for v1 storage
local v1_file = io.open(minetest.get_worldpath().."/mail.db", "r")
if v1_file then
-- v1 to v3
migrate_v1_to_v3()
mail.storage:set_int(STORAGE_VERSION_KEY, 3)
end
end