查看“︁模块:OWMOMarket”︁的源代码

local p = {}

function p.renderSidebar(frame)
    local extData = mw.ext.externalData
    if not extData or not extData.getDbData then return "错误：未找到 External Data 接口" end

    -- 1. 获取最新期数并推算 8 期（1个月）前的起点
    local latest_data = extData.getDbData{
        db = 'wp_db', from = 'wp_owmc_currency_rates',
        ['order by'] = 'year DESC, month DESC', limit = 1,
        data = 'year=year, month=month'
    }
    if not latest_data or not latest_data[1] then return "暂无行情数据" end
    local max_y = tonumber(latest_data[1].year)
    local max_m = tonumber(latest_data[1].month)
    local max_abs = max_y * 104 + max_m
    local min_abs = max_abs - 7

    -- 2. 一次性抓取这 8 期的所有行情数据
    local where_clause = string.format("(year * 104 + month) >= %d", min_abs)
    local all_rates = extData.getDbData{
        db = 'wp_db', from = 'wp_owmc_currency_rates',
        where = where_clause, limit = 5000,
        data = 'currency_code=currency_code, year=year, month=month, rate=rate'
    }
    local meta_data = extData.getDbData{
        db = 'wp_db', from = 'wp_owmc_currency_meta', limit = 200,
        data = 'currency_code=currency_code, currency_name=currency_name'
    }

    -- 3. 梳理数据结构 & 动态计算 WPV (对数几何平均)
    local meta_map = {}
    if meta_data then for _, r in ipairs(meta_data) do meta_map[r.currency_code] = r.currency_name end end

    local rates_by_abs = {}
    local codes_set = {}
    if all_rates then
        for _, r in ipairs(all_rates) do
            local abs_p = tonumber(r.year) * 104 + tonumber(r.month)
            if not rates_by_abs[abs_p] then rates_by_abs[abs_p] = {} end
            rates_by_abs[abs_p][r.currency_code] = tonumber(r.rate)
            codes_set[r.currency_code] = true
        end
    end

    local wpv_by_abs = {}
    for abs_p = min_abs, max_abs do
        local rates = rates_by_abs[abs_p]
        if rates then
            local sum_log = 0; local count = 0
            for code, rate in pairs(rates) do
                if rate > 0 then sum_log = sum_log + math.log(rate); count = count + 1 end
            end
            wpv_by_abs[abs_p] = count > 0 and math.exp(sum_log / count) or 1.0
        else
            wpv_by_abs[abs_p] = 1.0
        end
    end

    -- 4. 统计处理 (WMC归1标价，WPV核算涨跌与画图)
    local stats = {}
    local wmc_current = rates_by_abs[max_abs] and rates_by_abs[max_abs]['WMC'] or 1.0

    for code, _ in pairs(codes_set) do
        local current_rate = rates_by_abs[max_abs] and rates_by_abs[max_abs][code]
        local old_rate = rates_by_abs[min_abs] and rates_by_abs[min_abs][code]

        if current_rate and old_rate and current_rate > 0 and old_rate > 0 then
            local val_current = wmc_current / current_rate
            local wpv_current = wpv_by_abs[max_abs]
            local wpv_old = wpv_by_abs[min_abs]
            local fwd_current = wpv_current / current_rate
            local fwd_old = wpv_old / old_rate
            local pct = ((fwd_current - fwd_old) / fwd_old) * 100

            local history_vals = {}
            local min_val = math.huge
            local max_val = -math.huge
            for abs_p = min_abs, max_abs do
                local r = rates_by_abs[abs_p] and rates_by_abs[abs_p][code]
                if r and r > 0 then
                    local w_val = wpv_by_abs[abs_p] / r
                    table.insert(history_vals, w_val)
                    if w_val < min_val then min_val = w_val end
                    if w_val > max_val then max_val = w_val end
                else
                    table.insert(history_vals, 0)
                end
            end

            table.insert(stats, {
                code = code, name = meta_map[code] or code,
                val = val_current, pct = pct,
                history = history_vals, min_v = min_val, max_v = max_val
            })
        end
    end

    table.sort(stats, function(a, b) return a.pct > b.pct end)

    -- 5. 开始渲染 HTML
    local html = mw.html.create('div'):cssText("width: 100%; margin: 0; background: transparent; font-family: -apple-system, 'Segoe UI', sans-serif; padding: 4px 8px;")

    local function renderRow(item)
        local is_up = item.pct >= 0
        local color = is_up and "#f43f5e" or "#10b981"
        local sign = is_up and "▲ +" or "▼ "
        local pct_str = string.format("%.2f%%", item.pct)
        local val_str = string.format("%.4f", item.val)

        local svg_w = 64
        local svg_h = 28
        local pts = {}
        local range_v = item.max_v - item.min_v
        if range_v == 0 then range_v = 1 end

        for i, h_val in ipairs(item.history) do
            local x = (i - 1) / (#item.history - 1) * svg_w
            local y = 2 + (1 - (h_val - item.min_v) / range_v) * (svg_h - 4)
            table.insert(pts, string.format("%.1f,%.1f", x, y))
        end

        local line_path = "M" .. table.concat(pts, " L")
        local area_path = line_path .. string.format(" L%.1f,%.1f L0,%.1f Z", svg_w, svg_h, svg_h)
        local grad_id = "grad_" .. item.code

        -- 【无敌魔法】：生成带有 xmlns 的纯净 SVG 字符串
        local raw_svg = string.format(
            '<svg width="%d" height="%d" viewBox="0 0 %d %d" xmlns="http://www.w3.org/2000/svg"><defs><linearGradient id="%s" x1="0%%" y1="0%%" x2="0%%" y2="100%%"><stop offset="0%%" stop-color="%s" stop-opacity="0.35" /><stop offset="100%%" stop-color="%s" stop-opacity="0.0" /></linearGradient></defs><path d="%s" fill="url(#%s)" /><path d="%s" fill="none" stroke="%s" stroke-width="1.8" stroke-linecap="round" stroke-linejoin="round" /></svg>',
            svg_w, svg_h, svg_w, svg_h, grad_id, color, color, area_path, grad_id, line_path, color
        )

        -- 转码为 Base64，MediaWiki 解析器彻底瞎了
        local b64_svg = mw.text.encodeBase64(raw_svg)

        -- 将图表作为 DIV 的背景图渲染
        local sparkline = string.format('<div style="width: %dpx; height: %dpx; background-image: url(\'data:image/svg+xml;base64,%s\'); background-repeat: no-repeat; background-position: center; background-size: contain;"></div>', svg_w, svg_h, b64_svg)

        -- 行容器
        return string.format([[
        <div style="display: flex; justify-content: space-between; align-items: center; padding: 14px 10px; border-bottom: 1px solid #f1f5f9;">
            <div style="flex: 1; text-align: left;">
                <div style="font-weight: 900; color: #0f172a; font-size: 15px; font-family: 'Courier New', monospace;">%s</div>
                <div style="font-size: 12px; color: #64748b; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 100px;">%s</div>
            </div>
            <div style="flex: 0 0 65px; text-align: center; display: flex; justify-content: center;">%s</div>
            <div style="flex: 1; text-align: right;">
                <div style="font-weight: bold; font-family: 'Courier New', monospace; font-size: 15px; color: #0f172a;">%s</div>
                <div style="font-size: 12px; font-weight: 800; color: %s; letter-spacing: -0.5px;">%s%s</div>
            </div>
        </div>
        ]], item.code, item.name, sparkline, val_str, color, sign, pct_str)
    end

    local function renderHeader(title, color)
        return mw.html.create('div'):cssText(string.format("font-size: 13px; font-weight: 800; color: %s; text-transform: uppercase; margin-top: 14px; margin-bottom: 4px; padding-left: 10px;", color)):wikitext(title)
    end

    html:node(renderHeader("Core Assets / 主币", "#94a3b8"))
    local cores = {WMC=true, KCK=true, SKV=true, COS=true}
    for _, item in ipairs(stats) do
        if cores[item.code] then html:node(mw.html.create('div'):wikitext(renderRow(item))) end
    end

    html:node(renderHeader("Top Gainers / 领涨", "#f43f5e"))
    local count = 0
    for _, item in ipairs(stats) do
        if not cores[item.code] and item.pct > 0 then
            html:node(mw.html.create('div'):wikitext(renderRow(item)))
            count = count + 1
            if count >= 3 then break end
        end
    end

    html:node(renderHeader("Top Losers / 领跌", "#10b981"))
    count = 0
    for i = #stats, 1, -1 do
        local item = stats[i]
        if not cores[item.code] and item.pct < 0 then
            html:node(mw.html.create('div'):wikitext(renderRow(item)))
            count = count + 1
            if count >= 3 then break end
        end
    end

    html:node(mw.html.create('div')
        :cssText("text-align: center; font-size: 11px; color: #94a3b8; font-weight: 600; margin-top: 16px; padding-top: 12px; border-top: 1px dashed #e2e8f0;")
        :wikitext("数据来源: [https://blkl.fun/omoo OMOO (blkl.fun/omoo)]"))

    return tostring(html)
end

return p