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--
-- This module checks whether any of a given set of input criteria are valid CSD criteria.
-- It is also possible to specify pre-defined or custom sets of CSD criteria to check against.
--

local p = {}

function critMatch(s,test_values) -- returns true if s matches one of the table of test_values
    if type(test_values) == "table" then
        for n, value in ipairs(test_values) do
           if s == value then
               return true
           end
        end
    else
        error("critMatch() کو جانے والے دوسرے پیرامیٹر کا جدول ہونا لازمی ہے" ,2)
    end
end

function p.check(frame) -- the main CSD check function

    -- get arguments
    local args;
    if frame == mw.getCurrentFrame() then
        -- We're being called via #invoke. If the invoking template passed any args, use
        -- them. Otherwise, use the args that were passed into the template.
        args = frame:getParent().args;
        for k, v in pairs(frame.args) do
            args = frame.args;
            break
        end
    else
        -- We're being called from another module or from the debug console, so assume
        -- the args are passed in directly.
        args = frame;
    end

    -- define variables
    local input_values = {};
    local test_criteria = {};
    local all_criteria = { -- all valid CSD criteria
        "ع1" , "ع2" , "ع3" , "ع4" , "ع5" , "ع6" , "ع7" , "ع8" , "ع9" , "ع10" , "ع11" , "ع12" , "ع13" , "ع14" ,
        "م1" , "م2" , "م3" , "م5" , "م7" , "م9" , "م10" , "م11",
        "ف1" , "ف2" , "ف3" , "ف4" , "ف5" , "ف6" , "ف7" , "ف8" , "ف9" , "ف10" , "ف11" ,
        "ز1" , "ز2", "ز3" ,
        "ص1", "ص2", "ص5" ,
        "ر1" , "ر2" , "ر3" ,
        "ب1" , "ب2"
    };
    local tag_criteria = { -- all CSD criteria used by [[Template:Db-multiple]]
        "ع1" , "ع2" , "ع3" , "ع4" , "ع5" , "ع6" , "ع7" , "ع8" , "ع10" , "ع11" , "ع12" , "ع13" , "ع14" ,
        "م1" , "م2" , "م3" , "م5" , "م7" , "م9" , "م10" , "م11",
        "ف1" , "ف2" , "ف3" , "ف7" , "ف8" , "ف9" , "ف10" ,
        "ز1" ,
        "ص1" , "ص2" , "ص3" , "ص5" ,
        "ز2" , "ز3" , "ز4" ,
        "ب1" , "ب2"
    };
    local notice_criteria = { -- all CSD criteria used by [[Template:Db-notice-multiple]]
        "ع1" , "ع2" , "ع3" , "ع4" , "ع10" , "ع11" , "ع12" , "ع13" , "ع14" ,
        "م1" , "م2" , "م3" , "م5" , "م7" , "م9" , "م10" , "م11",
        "ف1" , "ف2" , "ف3" , "ف7" , "ف9" , "ف10" ,
        "ز1" ,
        "ص3" , "ص5" ,
        "ر2" , "ر3" , "ر4" ,
        "ب1" , "ب2"
    };

    -- build tables of input values and test criteria
    for k, v in pairs(args) do
        v = mw.ustring.upper(v);

        -- insert positional parameter values into input_values
        if type(k) == "number" then
            v = mw.ustring.gsub(v, "^%s*(.-)%s*$", "%1"); -- strip whitespace from positional parameters
            table.insert(input_values, v)

        -- insert critn parameter values into test_criteria
        elseif mw.ustring.match(k, "^crit[1-9]%d*$") then
            if critMatch(v, all_criteria) then -- check to make sure the criteria are valid
                table.insert(test_criteria, v)
            end
        end
    end

    -- work out which set of CSD criteria to check against
    local criteria_set = {}
    if next(test_criteria) then -- if any test criteria are specified, use those regardless of the "set" parameter
        criteria_set = test_criteria;
    elseif args["set"] == "tag" then
        criteria_set = tag_criteria;
    elseif args["set"] == "notice" then
        criteria_set = notice_criteria;
    else
        criteria_set = all_criteria;
    end

    -- check the input values against the criteria set and output "yes" if there is a match
    for i, v in ipairs(input_values) do
        if critMatch(v, criteria_set) then
            return "yes"
        end
    end
end

return p