Module:InterviewNavigation

Documentation for this module may be created at Module:InterviewNavigation/doc

local p = {}
local JSON_PAGE = 'JoJo Wiki:Interviews'

function compare_dates(a, b)
    if not a then return false end
    if not b then return true end

    local date1 = os.time{year = a.year, month = a.month, day = a.day or 1}
    local date2 = os.time{year = b.year, month = b.month, day = b.day or 1}
    return date1 < date2
end

function parse_date(date_str)
    local month_name, day, year = date_str:match('(%a+)%s*(%d*)%s*,%s*(%d+)')
    if not month_name then
        return nil
    end

    local months = {
        January = 1, February = 2, March = 3, April = 4, May = 5, June = 6,
        July = 7, August = 8, September = 9, October = 10, November = 11, December = 12
    }

    local month = months[month_name]
    day = tonumber(day) or nil
    year = tonumber(year)

    if not month or not year then
        return nil
    end

    return {year = year, month = month, day = day}
end

function find_previous_next_interview(interviews, current_date, direction)
    local target_interview = nil
    local target_date_difference = nil

    for _, interview in ipairs(interviews) do
        local interview_date = interview.parsed_date
        local date_difference = os.difftime(os.time(interview_date), os.time(current_date))

        if direction == "prev" then
            if date_difference < 0 and (not target_date_difference or date_difference > target_date_difference) then
                target_interview = interview
                target_date_difference = date_difference
            end
        elseif direction == "next" then
            if date_difference > 0 and (not target_date_difference or date_difference < target_date_difference) then
                target_interview = interview
                target_date_difference = date_difference
            end
        end
    end

    return target_interview
end

function p.main(frame)
    local current_title = frame.args[1]
    local direction = frame.args[2]
    local original_interviews = mw.loadJsonData(JSON_PAGE)
    local interviews = {}

    for _, interview in ipairs(original_interviews) do
        local parsed_date = parse_date(interview.date)
        if parsed_date then
            local interview_copy = {
                title = interview.title,
                date = interview.date,
                parsed_date = parsed_date
            }
            table.insert(interviews, interview_copy)
        end
    end

    table.sort(interviews, function(a, b) return compare_dates(a.parsed_date, b.parsed_date) end)

    -- Debugging: output sorted interviews
    mw.log("Sorted Interviews:")
    for _, interview in ipairs(interviews) do
        mw.log(interview.title .. " - " .. interview.date)
    end

    local current_date = parse_date(mw.title.new(current_title).text)
    if not current_date then
        return nil
    end

    local target_interview = find_previous_next_interview(interviews, current_date, direction)
    if not target_interview then
        return nil
end

-- Debugging: output current title, current date, target title, and target date
mw.log("Current title: " .. current_title)
mw.log("Current date: " .. tostring(current_date.year) .. "-" .. tostring(current_date.month) .. "-" .. tostring(current_date.day or "nil"))
mw.log("Target title: " .. target_interview.title)
mw.log("Target date: " .. target_interview.date)

return "[[Interview:" .. target_interview.title .. "|" .. target_interview.date .. "]]"
end

return p