feat: EV charging stop planner with charger power - #161
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Included review availability: This review used your included allowance. Your plan provides up to 1 included review per hour; 0 remain after this review. 📝 WalkthroughWalkthroughThe change adds EV charger power to station data and API features. It adds EV profiles and energy-based route planning. Map popups show charger power or an unknown-power message. Shared links can set the selected fuel type. ChangesEV Charging
Priority: ➖ Normal Estimated code review effort: 4 (Complex) | ~45 minutes Change: Feature Merge Risk: ⚪ Minimal · up to This change adds EV charger power and EV route planning while leaving fuel planning unchanged. No unresolved merge-blocking issue was found. Apply the documented database migration before deploying the new image. Security Architecture ReviewSecurity architecture risk: 🔵 Low · up to The inspected changes add read-only charger metadata and local EV planning without introducing new privileged operations. The main design dependency is applying the database change before deploying its new readers and writers. Deployment ordering and broader security coverage remain unverified. Retained concerns Security review detailsSecurity Blast Radius
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Actionable comments posted: 3
- 🪄 Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at @prisma/schema.prisma:
- Around line 22-23: Update the Docker deployment workflow for the maxPowerKw
schema change so it applies the existing migration before starting the
application, or document that migration as a required Docker upgrade step.
Ensure this deployment path cannot serve requests against a database that lacks
the max_power_kw column.
Review comments at @src/scrapers/bnetza.ts:
- Around line 201-207: Update rowPowerKw to validate each finite connector value
with sanePowerKw before comparing it with the current maximum. Return the
highest valid connector power, or null if none are valid, so an invalid larger
value cannot discard a valid smaller one.
Review comments at @src/scrapers/ocm.ts:
- Line 312: Update the OCM POI mapping’s maxPowerKw calculation to exclude
connector powers rejected by sanePowerKw before selecting the maximum, so an
invalid high value cannot discard a valid lower power. Preserve the zero
fallback when no valid connector powers remain.
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📒 Files selected for processing (33)
docs/reference/api.mddocs/reference/data-model.mddocs/using/ev-charging.mdprisma/schema.prismasrc/app/[locale]/page.tsxsrc/app/api/route-stations/route.test.tssrc/app/api/route-stations/route.tssrc/app/api/stations/nearest/route.test.tssrc/app/api/stations/nearest/route.tssrc/app/api/stations/route.test.tssrc/app/api/stations/route.tssrc/components/home-client.tsxsrc/components/map/station-popup.test.tsxsrc/components/map/station-popup.tsxsrc/components/search/refuel-planner.test.tsxsrc/components/search/refuel-planner.tsxsrc/components/search/search-panel.tsxsrc/lib/i18n.tsxsrc/lib/refuel-planner.test.tssrc/lib/refuel-planner.tssrc/lib/share-url.test.tssrc/lib/share-url.tssrc/lib/vehicle-profile.test.tssrc/lib/vehicle-profile.tssrc/scrapers/base.test.tssrc/scrapers/base.tssrc/scrapers/bnetza.test.tssrc/scrapers/bnetza.tssrc/scrapers/ocm.test.tssrc/scrapers/ocm.tssrc/scrapers/reve.test.tssrc/scrapers/reve.tssrc/types/station.ts
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GeiserX
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Thanks for this. The planner side is solid: I fuzzed the charge cap on 3,000 random trips (no stop departs above the cap, a plan that works capped also works uncapped and never costs more, and a mutated copy without the bound fails 380 of them), the DP stays at about 45 ms with 200 candidates and 15 stops on a 2,500 km trip, tsc, eslint and the 270 tests in the touched files pass, and a live OpenChargeMap call with the scraper's exact parameters returns Connections[].PowerKW. I did not drive the UI in a browser.
Three things need to change before this merges, and a few smaller ones follow.
1. BNetzA drops the power of its fast chargers
In the live register a plug cell often holds several values joined with ; , one per plug on that charging point: 300; 300 for a CCS plus CHAdeMO point, 22; 22 for Type 2 plus Schuko. Number("300; 300") is NaN, so sanePowerKw returns null and the row contributes nothing.
I ran parseBnetzaTsv from this branch over today's file: 7,485 operational rows carry such a cell, and after the merge 3,116 of the 74,391 stations end with no power. 1,581 of those are 50 kW or more, exactly the chargers the planner is for. Splitting each cell on ; before Number() brings that to 0 stations without power, and the count of stations at 50 kW or more goes from 16,374 to 17,955.
The fixture rows use 22,5, a format the file does not use (no operational row has a comma, 3,019 have a dot, such as 30.0). Please make the fixture mirror the real file: a 300; 300 row, a 22; 22 row and a 30.0 row, so the test fails without the split.
2. Every scraper stops on a database without the new column, not only the EV ones
upsertStations now writes max_power_kw for every station, so on an un-migrated database all fuel scrapers fail too, and prices go stale until someone runs the SQL. The PR body says "scraper upserts fail", which reads as the EV ones.
My preference: write the column only for charger batches (stationType !== "fuel"). Fuel stations never have a power, so nothing is lost, fuel-only installs keep updating, and the EV scrapers fail loudly until the migration runs, which is the feature that needs it. If you would rather keep one SQL statement, then the upgrade note and the release notes must say plainly that every scraper stops until the column exists.
Also drop the line about Helm installs being covered. The published image ships neither the Prisma CLI nor schema.prisma (checked on 1.15.2), and the upgrading page already says prisma db push cannot build a working schema. The chart's init container is a separate known problem; do not lean on it.
3. The fuel reserve default doubles without a reason
fix(planner): raise the default reserve to 20 % changes the default for fuel plans as well, and the commit gives no rationale. On a 50 L tank that is 10 L the planner may never touch, which makes plans dearer for everyone who never opens the settings. If EV needs the larger buffer, give each mode its own default and keep fuel at 10.
Smaller
docs/reference/data-model.mdincludes each migration file verbatim under "The shipped files". Add a tab for the new one.docs/using/ev-charging.mddescribes the popup change but not the new charging stop planner. A short paragraph under "Chargers along a route" saying what it plans, the 80 % cap and the minimum power filter is enough.chargeKwcaps AC posts at 11 kW regardless of the car's onboard charger, so a car with a 7.4 kW charger gets estimates that are a third too optimistic at every AC post, and the "Max charge power" field cannot fix it because it only applies to DC. Either apply the field to AC too, capped at 22, or say in the docs that AC is assumed at 11 kW.
Happy to merge once these are in.
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All three blockers and the smaller items are addressed. Re-checked on the new head: tsc, eslint and the full suite (613 tests) pass, the new parser gives every one of the 74,391 register stations a power on today's file, and fuel batches no longer touch the column.
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Merged, thank you. The EV planner, the charger power and the BNetzA multi-plug fix all land in the next release, and the fuel-only upsert means nobody's price scrapers stop on an old schema. Nice work on the turnaround. |
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Thanks to you, for this amazing project |
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Summary
Extends the refuel planner to electric vehicles and stores each charger's maximum power, so EV routes get planned charging stops that take charging speed into account.
Chargers have no prices yet, so EV plans weigh detour time and charging time only.
What changes
Planner (EV mode)
EVnow shows the planner with battery (kWh), consumption (kWh/100 km) and max charge power (kW) fields. The EV profile is stored apart from the fuel one (pumperly-ev).Charger power
stations.max_power_kwcolumn (SMALLINT; adding it is metadata-only, so it's instant on a full table).Nennleistung Stecker1..4), OpenChargeMap (Connections[].PowerKW) and Mapa REVE fill it with the fastest connector. Values ≤ 0 or > 1000 kW are dropped. Missing or malformed power never drops a station./api/stations,/api/stations/nearestand/api/route-stationsreturnpowerKwon EV features (left out when unknown).Other
?fuel=) is now read on the server too, so a shared EV link no longer renders the default fuel first and switches after the page loads.docs/updated (API reference, data model, EV page).Upgrade note
This PR adds a migration:
prisma/migrations/20260930000000_station_max_power_kw.Apply it before starting the new image. Until it runs, EV station requests return HTTP 500 and the EV scrapers (OpenChargeMap, BNetzA, Mapa REVE) fail, because
stations.max_power_kwdoes not exist. Fuel scrapers keep running: they never write the column.npx prisma migrate deploypsql -v ON_ERROR_STOP=1 ... < prisma/migrations/20260930000000_station_max_power_kw/migration.sqlIt is a single
ADD COLUMN IF NOT EXISTS ... SMALLINTwith no default, so it runs instantly and is safe to run twice. See docs/operations/upgrading.md#migrations.Why no auto-migrate in the Dockerfile:
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Summary