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aa351ae616
* Initial foundational pass at multi-currency * Default format currency * More work on currency and exchanging * Re-build currencies on change * Currency import/setup * Background job overhaul + cheaper OXR plan support * Lint fixes * Test fixes * Multi-currency setup instructions * Allow decimals in the balance field * Spacing fix for form --------- Signed-off-by: Josh Pigford <josh@joshpigford.com>
83 lines
3.7 KiB
Ruby
83 lines
3.7 KiB
Ruby
namespace :exchange_rates do
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desc "Fetch exchange rates from openexchangerates.org"
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task sync: :environment do
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app_id = ENV["OPEN_EXCHANGE_APP_ID"]
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MININUM_DATE_RANGE = 30.days
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MAXIMUM_DATE_RANGE = 120.days
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# First, check what plan the user is on at OXR
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# If the user is on the Developer plan, we can only fetch exchange rates for the past 30 days and must use the historical endpoint
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account_check = Faraday.get("https://openexchangerates.org/api/usage.json") do |req|
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req.params["app_id"] = app_id
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end
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account_details = JSON.parse(account_check.body)
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quota_limit = account_details["data"]["usage"]["requests_quota"]
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if quota_limit <= 10000
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# First loop through all Currency records and fetch exchange rates for each, but use the historical endpoint, which only allows fetching one day at a time. For each currency, set the base currency to the currency's iso_code and the symbols to all other currencies' iso_codes
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Currency.all.each do |currency|
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(Date.today - MININUM_DATE_RANGE).upto(Date.today) do |date|
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response = Faraday.get("https://openexchangerates.org/api/historical/#{date}.json") do |req|
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req.params["app_id"] = app_id
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req.params["base"] = currency.iso_code
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req.params["symbols"] = Currency.where.not(iso_code: currency.iso_code).pluck(:iso_code).join(",")
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end
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if response.success?
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rates = JSON.parse(response.body)["rates"]
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rates.each do |currency_iso_code, value|
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ExchangeRate.find_or_create_by(date: date, base_currency: currency.iso_code, converted_currency: currency_iso_code) do |exchange_rate|
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exchange_rate.rate = value
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end
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puts "#{currency.iso_code} to #{currency_iso_code} on #{date}: #{value}"
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end
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else
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puts "Failed to fetch exchange rates for #{currency.iso_code} on #{date}: #{response.status}"
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end
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end
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end
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else
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# Use Faraday to make a request openexchangerates.org time series endpoint
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# Use the response to create or update exchange rates in the database
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url = "https://openexchangerates.org/api/time-series.json"
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start_date = (Date.today - MAXIMUM_DATE_RANGE).to_s
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end_date = Date.today.to_s
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# Loop through all Currency records and fetch exchange rates for each
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Currency.all.each do |currency|
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start_period = Date.parse(start_date)
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end_period = Date.parse(end_date)
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while start_period < end_period
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current_end_date = [ start_period + 30.days, end_period ].min
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response = Faraday.get(url) do |req|
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req.params["app_id"] = app_id
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req.params["start"] = start_period.to_s
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req.params["end"] = current_end_date.to_s
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req.params["base"] = currency.iso_code
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req.params["symbols"] = Currency.where.not(iso_code: currency.iso_code).pluck(:iso_code).join(",")
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end
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if response.success?
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rates = JSON.parse(response.body)["rates"]
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rates.each do |date, rate|
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rate.each do |currency_iso_code, value|
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ExchangeRate.find_or_create_by(date: date, base_currency: currency.iso_code, converted_currency: currency_iso_code) do |exchange_rate|
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exchange_rate.rate = value
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end
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puts "#{currency.iso_code} to #{currency_iso_code} on #{date}: #{value}"
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end
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end
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else
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puts "Failed to fetch exchange rates for period #{start_period} to #{current_end_date}: #{response.status}"
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end
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start_period = current_end_date + 1.day
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end
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end
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end
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end
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end
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