-- AD Runs Storage
-- Runs gemmes i savegame-mappen ved siden af AutoDrive_config.xml. Kun dette lag
-- kender XMLFile; modellen (adRuns) ser kun flade poster.

ADRunsStorage = {}

ADRunsStorage.FILE_NAME = "ADSmartPickup_runs.xml"
ADRunsStorage.ROOT = "ADSmartPickupRuns"
ADRunsStorage.LOG_PREFIX = "ADSmartPickup: "

-- Samme opslag som AutoDrive.getXMLFile_new: mappen kendes efter første gem, ellers via indeks.
function ADRunsStorage.getPath()
    local info = g_currentMission ~= nil and g_currentMission.missionInfo or nil
    if info == nil then
        return nil
    end
    if info.savegameDirectory ~= nil then
        return info.savegameDirectory .. "/" .. ADRunsStorage.FILE_NAME
    end
    if info.savegameIndex ~= nil and getUserProfileAppPath ~= nil then
        return getUserProfileAppPath() .. "savegame" .. tostring(info.savegameIndex) .. "/" .. ADRunsStorage.FILE_NAME
    end
    return nil
end

function ADRunsStorage.writeRecords(xmlFile, records)
    xmlFile:setInt(ADRunsStorage.ROOT .. "#version", ADRuns.XML_VERSION)
    for index, record in ipairs(records) do
        local key = string.format("%s.run(%d)", ADRunsStorage.ROOT, index - 1)
        xmlFile:setInt(key .. "#id", record.id)
        xmlFile:setString(key .. "#name", record.name)
        xmlFile:setInt(key .. "#target", record.target)
        xmlFile:setString(key .. "#ingredientMode", record.ingredientMode)
        xmlFile:setString(key .. "#ingredients", record.ingredients)
        xmlFile:setString(key .. "#waitPool", record.waitPool)
        xmlFile:setInt(key .. "#loops", record.loops)
        for vehicleIndex, vehicleId in ipairs(record.vehicleIds) do
            xmlFile:setString(string.format("%s.vehicle(%d)#id", key, vehicleIndex - 1), vehicleId)
        end
    end
end

function ADRunsStorage.readRecords(xmlFile)
    local records = {}
    xmlFile:iterate(ADRunsStorage.ROOT .. ".run", function(_, key)
        local record = {
            id = xmlFile:getInt(key .. "#id"),
            name = xmlFile:getString(key .. "#name"),
            target = xmlFile:getInt(key .. "#target"),
            ingredientMode = xmlFile:getString(key .. "#ingredientMode"),
            ingredients = xmlFile:getString(key .. "#ingredients"),
            waitPool = xmlFile:getString(key .. "#waitPool"),
            loops = xmlFile:getInt(key .. "#loops"),
            vehicleIds = {},
        }
        xmlFile:iterate(key .. ".vehicle", function(_, vehicleKey)
            local id = xmlFile:getString(vehicleKey .. "#id")
            if id ~= nil and id ~= "" then
                table.insert(record.vehicleIds, id)
            end
        end)
        table.insert(records, record)
    end)
    return records
end

function ADRunsStorage.save(store)
    local path = ADRunsStorage.getPath()
    if path == nil then
        return false
    end
    local xmlFile = XMLFile.create("ADSmartPickupRuns", path, ADRunsStorage.ROOT)
    if xmlFile == nil then
        Logging.warning(ADRunsStorage.LOG_PREFIX .. "kunne ikke oprette %s", path)
        return false
    end
    ADRunsStorage.writeRecords(xmlFile, ADRuns.toRecords(store))
    xmlFile:save()
    xmlFile:delete()
    return true
end

function ADRunsStorage.load()
    local path = ADRunsStorage.getPath()
    if path == nil or not fileExists(path) then
        return ADRuns.newStore()
    end
    local xmlFile = XMLFile.load("ADSmartPickupRuns", path)
    if xmlFile == nil then
        Logging.warning(ADRunsStorage.LOG_PREFIX .. "kunne ikke læse %s; starter uden runs", path)
        return ADRuns.newStore()
    end
    local records = ADRunsStorage.readRecords(xmlFile)
    xmlFile:delete()
    return ADRuns.fromRecords(records)
end