options.timeout   = 120
options.create    = false
options.subscribe = false
options.expunge   = true

function move_mails(account, mails)
    move_if_contains(account, mails, "linux-bluetooth"     , "bluez"            )
    move_if_contains(account, mails, "coffee"              , "Coffee"           )
    move_if_contains(account, mails, "freedesktop.org"     , "FreedesktopGitlab")
    move_if_contains(account, mails, "gstreamer-devel"     , "gstreamer"        )
    move_if_contains(account, mails, "gstreamer-embedded"  , "gstreamer"        )
    move_if_contains(account, mails, "ietf.org"            , "ietf"             )
    move_if_contains(account, mails, "monster.com"         , "Jobs"             )
    move_if_contains(account, mails, "naukri.com"          , "Jobs"             )
    move_if_contains(account, mails, "lists.infradead.org" , "Linux Kernel"     )
    move_if_contains(account, mails, "vger.kernel.org"     , "Linux Kernel"     )
    move_if_contains(account, mails, "u-boot@lists.denx.de", "Uboot"            )
    move_if_contains(account, mails, "bseindia.in"         , "Zerodha"          )
    move_if_contains(account, mails, "cdslindia.co.in"     , "Zerodha"          )
    move_if_contains(account, mails, "zerodha.net"         , "Zerodha"          )
end

function move_if_contains(account, mails, contain, mailbox)
    local filtered = mails:contain_cc(contain)
    filtered:move_messages(account[mailbox]);

    filtered = mails:contain_from(contain)
    filtered:move_messages(account[mailbox]);

    filtered = mails:contain_to(contain)
    filtered:move_messages(account[mailbox]);
end

function move_to_gmail_trash(account, mails, mailbox)
   local filtered = mails:select_all()
   filtered:move_messages(account[mailbox])
end

function delete_trash(mails)
   local filtered = mails:select_all()
   filtered:delete_messages()
end

function get_password(pass_account_name)
    local cmd  = "pass show " .. pass_account_name
    local fd   = io.popen(cmd, 'r')
    local pass = fd:read("*a")
    fd:close()
    return pass;
end

-- https://github.com/lefcha/imapfilter/issues/199
function sanitize_pwd(pwd)
    pwd = string.gsub(pwd, "\n", "")
    pwd = string.gsub(pwd, '%\\', '\\\\')
    pwd = string.gsub(pwd, '%"', '\\"')
    return pwd
end

accounts = {}
credentials = {
    ["sanchayanmaity.net"] = {
        server   = 'imap.migadu.com',
        username = 'me@sanchayanmaity.net',
        password = sanitize_pwd(get_password("migadu/sanchayanmaity.net")),
    },
    ["sanchayanmaity.com"] = {
        server   = 'imap.migadu.com',
        username = 'me@sanchayanmaity.com',
        password = sanitize_pwd(get_password("migadu/sanchayanmaity.com")),
    },
    ["fastmail"] = {
        server   = 'imap.fastmail.com',
        username = 'maitysanchayan@fastmail.com',
        password = get_password("apppass/fastmail"),
    },
    ["gmail-sanchayan"] = {
        server   = 'imap.gmail.com',
        username = 'maitysanchayan@gmail.com',
        password = get_password("apppass/sanchayan"),
    },
}

function map_credentials_to_account(account_name)
    accounts[account_name] = IMAP {
        server   = credentials[account_name].server,
        username = credentials[account_name].username,
        password = credentials[account_name].password,
        ssl      = 'auto',
    }
end

function filter_mails(account_name)
    local account = accounts[account_name]

    account.INBOX:check_status()
    local mails = account.INBOX:select_all()
    move_mails(account, mails)

    account.Sent:check_status()
    local mails = account.Sent:select_all()
    move_mails(account, mails)

    account['Trash']:check_status()
    local trash_mails = account['Trash']:select_all()

    if string.find(account_name, "gmail") then
        move_to_gmail_trash(account, trash_mails, '[Gmail]/Trash')
        mails = account['[Gmail]/Trash']:select_all()
        delete_trash(mails)
    else
        delete_trash(trash_mails)
    end
end

map_credentials_to_account("sanchayanmaity.net")
map_credentials_to_account("sanchayanmaity.com")
map_credentials_to_account("fastmail")
map_credentials_to_account("gmail-sanchayan")

for account_name, _ in pairs(accounts) do
    filter_mails(account_name)
end