2-pt-page-count-metadata-be-damned.lua

local userpatch = require("userpatch")

local function patchCoverBrowser(plugin)
    local BookInfoManager = require("bookinfomanager")
    local DocSettings = require("docsettings")
    local doc_pages_cache = {}
    local orig_getBookInfo = BookInfoManager.getBookInfo

    function BookInfoManager:getBookInfo(filepath, do_cover_image, ...)
        local bookinfo = orig_getBookInfo(self, filepath, do_cover_image, ...)
        if not bookinfo then
            return bookinfo
        end

        if bookinfo.pages == nil then
            local cached = doc_pages_cache[filepath]
            if cached ~= nil then
                if cached > 0 then
                    bookinfo.pages = cached
                end
                return bookinfo
            end

            local pages = 0
            local sidecar = DocSettings:findSidecarFile(filepath)
            if sidecar then
                local ok, docsettings = pcall(DocSettings.openSettingsFile, sidecar)
                if ok and docsettings then
                    local n = tonumber(docsettings:readSetting("doc_pages"))
                    if n and n > 0 then
                        pages = n
                    end
                end
            end

            doc_pages_cache[filepath] = pages
            if pages > 0 then
                bookinfo.pages = pages
            end
        end

        return bookinfo
    end
end

userpatch.registerPatchPluginFunc("coverbrowser", patchCoverBrowser)