qewqwe

custom/apps/mining-checker/assets/js/app.js

@@ -477,9 +477,6 @@
         daily_cost_currency: 'EUR',
         report_currency: 'EUR',
         crypto_currency: 'DOGE',
-        crypto_base_price_amount: '',
-        crypto_base_price_currency: 'USD',
-        fiat_base_price_amount: '',
         preferred_currencies: ['DOGE', 'USD', 'EUR'],
         cost_plans: [],
         currencies: [],
@@ -890,6 +887,7 @@
       crypto_base_price_currency: 'USD',
       fiat_base_price_amount: '',
     });
+    const [offerBasisHistory, setOfferBasisHistory] = useState([]);
     const [previewMinerOffers, setPreviewMinerOffers] = useState([]);
     const [previewOffersLoading, setPreviewOffersLoading] = useState(false);
     const [moduleAuthForm, setModuleAuthForm] = useState({
@@ -1029,6 +1027,9 @@
     const selectableCurrencies = preferredSelectableCurrencies.length ? preferredSelectableCurrencies : currencies;
     const evaluatedMinerOffers = Array.isArray(previewMinerOffers) ? previewMinerOffers : [];
     const selectedOfferType = String(minerOfferFilters.offer_type || 'crypto').toLowerCase() === 'fiat' ? 'fiat' : 'crypto';
+    const visibleOfferBasisHistory = (Array.isArray(offerBasisHistory) ? offerBasisHistory : [])
+      .filter((entry) => String(entry.offer_type || '').toLowerCase() === selectedOfferType)
+      .slice(0, 6);
     const hasCryptoOfferBasis = Number(offerPreviewForm.crypto_base_price_amount) > 0;
     const hasFiatOfferBasis = Number(offerPreviewForm.fiat_base_price_amount) > 0;
     const filteredMinerOffers = evaluatedMinerOffers.filter((offer) => {
@@ -1188,7 +1189,7 @@
         } finally {
           setPreviewOffersLoading(false);
         }
-      }, 250);
+      }, selectedOfferType === 'crypto' ? 1000 : 250);
 
       return () => window.clearTimeout(timeoutId);
     }, [
@@ -1532,8 +1533,24 @@
         return;
       }
       loadFxHistory(projectKey);
+      loadOfferBasisHistory(projectKey);
     }, [activeTab, projectKey]);
 
+    useEffect(() => {
+      if (!Array.isArray(offerBasisHistory) || offerBasisHistory.length === 0) {
+        return;
+      }
+
+      const latestCrypto = offerBasisHistory.find((entry) => String(entry.offer_type || '').toLowerCase() === 'crypto') || null;
+      const latestFiat = offerBasisHistory.find((entry) => String(entry.offer_type || '').toLowerCase() === 'fiat') || null;
+
+      setOfferPreviewForm((current) => ({
+        crypto_base_price_amount: current.crypto_base_price_amount || (latestCrypto && latestCrypto.base_price_amount !== null && latestCrypto.base_price_amount !== undefined ? String(latestCrypto.base_price_amount) : ''),
+        crypto_base_price_currency: current.crypto_base_price_currency || latestCrypto?.base_price_currency || 'USD',
+        fiat_base_price_amount: current.fiat_base_price_amount || (latestFiat && latestFiat.base_price_amount !== null && latestFiat.base_price_amount !== undefined ? String(latestFiat.base_price_amount) : ''),
+      }));
+    }, [offerBasisHistory]);
+
     useEffect(() => {
       if (activeTab !== 'wallet') {
         return;
@@ -2398,6 +2415,37 @@
       }
     }
 
+    async function loadOfferBasisHistory(key) {
+      try {
+        const result = await request(`${apiBase}/projects/${encodeURIComponent(key)}/offer-basis-history`, { timeoutMs: 6000 });
+        setOfferBasisHistory(Array.isArray(result) ? result : []);
+      } catch (err) {
+        setOfferBasisHistory([]);
+      }
+    }
+
+    async function rememberOfferBasisInput(offerType, amount, currency) {
+      const numericAmount = Number(amount);
+      if (!Number.isFinite(numericAmount) || numericAmount <= 0) {
+        return;
+      }
+
+      try {
+        await request(`${apiBase}/projects/${encodeURIComponent(projectKey)}/offer-basis-history`, {
+          method: 'POST',
+          headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify({
+            offer_type: offerType,
+            base_price_amount: numericAmount,
+            base_price_currency: offerType === 'crypto' ? (currency || 'USD') : 'EUR',
+          }),
+        });
+        await loadOfferBasisHistory(projectKey);
+      } catch (err) {
+        setError(err.message);
+      }
+    }
+
     function resetReportCurrencyOverride() {
       setReportCurrencyOverride('');
       setCookie('mining_checker_report_currency', '', 0);
@@ -3075,10 +3123,32 @@
           [
             h('div', { key: 'filters', className: 'mc-filter-grid' }, [
               selectedOfferType === 'crypto'
-                ? inputField('Basispreis fuer 50 kH/s auf 3 Monate', 'number', offerPreviewForm.crypto_base_price_amount, (value) => setOfferPreviewForm({ ...offerPreviewForm, crypto_base_price_amount: value }), '0.000001')
-                : inputField('Basispreis fuer 100 kH/s auf 3 Monate in EUR', 'number', offerPreviewForm.fiat_base_price_amount, (value) => setOfferPreviewForm({ ...offerPreviewForm, fiat_base_price_amount: value }), '0.000001'),
+                ? fieldWrapper('Basispreis fuer 50 kH/s auf 3 Monate', h('input', {
+                    className: 'mc-input',
+                    type: 'number',
+                    step: '0.000001',
+                    value: offerPreviewForm.crypto_base_price_amount,
+                    onChange: (event) => setOfferPreviewForm({ ...offerPreviewForm, crypto_base_price_amount: event.target.value }),
+                    onBlur: () => rememberOfferBasisInput('crypto', offerPreviewForm.crypto_base_price_amount, offerPreviewForm.crypto_base_price_currency || 'USD'),
+                  }))
+                : fieldWrapper('Basispreis fuer 100 kH/s auf 3 Monate in EUR', h('input', {
+                    className: 'mc-input',
+                    type: 'number',
+                    step: '0.000001',
+                    value: offerPreviewForm.fiat_base_price_amount,
+                    onChange: (event) => setOfferPreviewForm({ ...offerPreviewForm, fiat_base_price_amount: event.target.value }),
+                    onBlur: () => rememberOfferBasisInput('fiat', offerPreviewForm.fiat_base_price_amount, 'EUR'),
+                  })),
               selectedOfferType === 'crypto'
-                ? selectField('Basiswaehrung', offerPreviewForm.crypto_base_price_currency || 'USD', Array.from(new Set(['USD', String(currentSettings.crypto_currency || 'DOGE').toUpperCase()])), (value) => setOfferPreviewForm({ ...offerPreviewForm, crypto_base_price_currency: value || 'USD' }))
+                ? fieldWrapper('Basiswaehrung', h('select', {
+                    className: 'mc-select',
+                    value: offerPreviewForm.crypto_base_price_currency || 'USD',
+                    onChange: async (event) => {
+                      const nextCurrency = event.target.value || 'USD';
+                      setOfferPreviewForm({ ...offerPreviewForm, crypto_base_price_currency: nextCurrency });
+                      await rememberOfferBasisInput('crypto', offerPreviewForm.crypto_base_price_amount, nextCurrency);
+                    },
+                  }, Array.from(new Set(['USD', String(currentSettings.crypto_currency || 'DOGE').toUpperCase()])).map((value) => h('option', { key: value, value }, value))))
                 : displayField('Basiswaehrung', 'EUR'),
               selectField('Angebotsart', minerOfferFilters.offer_type, [
                 { value: 'crypto', label: 'Crypto' },
@@ -3095,6 +3165,14 @@
                 label: `${value} Monate`,
               }))), (value) => setMinerOfferFilters({ ...minerOfferFilters, runtime_months: value })),
             ]),
+            visibleOfferBasisHistory.length ? h('div', { key: 'basis-history', className: 'mc-mini-grid' }, visibleOfferBasisHistory.map((entry) => h('div', {
+              key: `basis-${entry.id}`,
+              className: 'mc-mini-card',
+            }, [
+              h('div', { key: 'label', className: 'mc-field-label' }, selectedOfferType === 'crypto' ? 'Crypto-Basis' : 'Fiat-Basis'),
+              h('div', { key: 'value' }, `${fmtNumber(entry.base_price_amount, 6)} ${entry.base_price_currency}`),
+              h('div', { key: 'sub', className: 'mc-kicker' }, entry.created_at ? fmtDate(entry.created_at) : 'Zeitpunkt unbekannt'),
+            ]))) : null,
             h('div', { key: 'offers-table', className: 'mc-table-shell' }, [
               h('table', { key: 'table', className: 'mc-table' }, [
                 h('thead', { key: 'head' }, h('tr', null, ['Label', 'Hashrate', 'Preis', 'Erwartet/Tag', 'Break-even', 'Empfehlung', 'Aktion'].map((label) => h('th', { key: label }, label)))),
@@ -3102,8 +3180,30 @@
                   filteredMinerOffers.length
                     ? filteredMinerOffers.map((offer) => h('tr', { key: offer.id }, [
                         h('td', { key: 'label' }, offer.label),
-                        h('td', { key: 'hashrate' }, formatAdaptiveSpeed(offer.offer_hashrate_mh)),
+                        h('td', { key: 'hashrate' }, [
+                          h('div', { key: 'base' }, formatSpeed(offer.mining_speed_value, offer.mining_speed_unit, 'Basis') || 'n/a'),
+                          Number(offer.bonus_speed_value) > 0
+                            ? h('div', { key: 'bonus', className: 'mc-kicker' }, formatSpeed(offer.bonus_speed_value, offer.bonus_speed_unit, 'Bonus'))
+                            : h('div', { key: 'bonus', className: 'mc-kicker' }, 'Bonus 0'),
+                          h('div', { key: 'total', className: 'mc-kicker' }, `Gesamt ${formatAdaptiveSpeed(offer.offer_hashrate_mh)}`),
+                        ]),
                         h('td', { key: 'price' }, [
+                          offer.payment_type === 'crypto'
+                            ? [
+                                offer.crypto_display_price_amount !== null && offer.crypto_display_price_currency
+                                  ? h('div', { key: 'price-crypto' }, [
+                                      h('div', { key: 'amount' }, `${fmtNumber(offer.crypto_display_price_amount, 6)} ${offer.crypto_display_price_currency}`),
+                                      h('div', { key: 'label', className: 'mc-kicker' }, 'Zu zahlen in Krypto'),
+                                    ])
+                                  : null,
+                                offer.usd_display_price_amount !== null && offer.usd_display_price_currency
+                                  ? h('div', { key: 'price-usd' }, [
+                                      h('div', { key: 'amount' }, `${fmtNumber(offer.usd_display_price_amount, 6)} ${offer.usd_display_price_currency}`),
+                                      h('div', { key: 'label', className: 'mc-kicker' }, 'Zu zahlen in USD'),
+                                    ])
+                                  : null,
+                              ]
+                            : [
                                 h('div', { key: 'price-main' }, [
                                   h('div', { key: 'amount' }, `${fmtNumber(offer.effective_price_amount, 6)} ${offer.effective_price_currency}`),
                                   h('div', { key: 'label', className: 'mc-kicker' }, 'Zu zahlen'),
@@ -3114,6 +3214,7 @@
                                       h('div', { key: 'label', className: 'mc-kicker' }, 'Gegenwert'),
                                     ])
                                   : null,
+                              ],
                         ]),
                         h('td', { key: 'day' }, offer.expected_doge_per_day !== null ? `${fmtNumber(offer.expected_doge_per_day, 6)} ${currentCoinCurrency}` : 'n/a'),
                         h('td', { key: 'break' }, offer.break_even_days !== null ? `${fmtNumber(offer.break_even_days, 2)} Tage` : 'n/a'),

custom/apps/mining-checker/sql/schema.mysql.sql

@@ -160,6 +160,18 @@ CREATE TABLE IF NOT EXISTS miningcheck_miner_offers (
     CONSTRAINT fk_mining_miner_offers_project FOREIGN KEY (project_key) REFERENCES miningcheck_projects(project_key) ON DELETE CASCADE
 );
 
+CREATE TABLE IF NOT EXISTS miningcheck_offer_basis_history (
+    id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
+    project_key VARCHAR(64) NOT NULL,
+    owner_sub VARCHAR(191) NOT NULL DEFAULT 'local',
+    offer_type VARCHAR(16) NOT NULL,
+    base_price_amount DECIMAL(20,8) NOT NULL,
+    base_price_currency VARCHAR(10) NOT NULL,
+    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    CONSTRAINT fk_mining_offer_basis_history_project FOREIGN KEY (project_key) REFERENCES miningcheck_projects(project_key) ON DELETE CASCADE,
+    KEY idx_mining_offer_basis_history_project_owner_type_created (project_key, owner_sub, offer_type, created_at)
+);
+
 CREATE TABLE IF NOT EXISTS miningcheck_targets (
     id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
     project_key VARCHAR(64) NOT NULL,

custom/apps/mining-checker/sql/schema.pgsql.sql

@@ -173,6 +173,19 @@ CREATE TABLE IF NOT EXISTS miningcheck_miner_offers (
     CONSTRAINT fk_mining_miner_offers_project FOREIGN KEY (project_key) REFERENCES miningcheck_projects(project_key) ON DELETE CASCADE
 );
 
+CREATE TABLE IF NOT EXISTS miningcheck_offer_basis_history (
+    id BIGSERIAL PRIMARY KEY,
+    project_key VARCHAR(64) NOT NULL,
+    owner_sub VARCHAR(191) NOT NULL DEFAULT 'local',
+    offer_type VARCHAR(16) NOT NULL,
+    base_price_amount NUMERIC(20,8) NOT NULL,
+    base_price_currency VARCHAR(10) NOT NULL,
+    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    CONSTRAINT fk_mining_offer_basis_history_project FOREIGN KEY (project_key) REFERENCES miningcheck_projects(project_key) ON DELETE CASCADE
+);
+CREATE INDEX IF NOT EXISTS idx_mining_offer_basis_history_project_owner_type_created
+    ON miningcheck_offer_basis_history(project_key, owner_sub, offer_type, created_at);
+
 CREATE TABLE IF NOT EXISTS miningcheck_targets (
     id BIGSERIAL PRIMARY KEY,
     project_key VARCHAR(64) NOT NULL,

custom/apps/mining-checker/sql/schema.sql

@@ -160,6 +160,18 @@ CREATE TABLE IF NOT EXISTS miningcheck_miner_offers (
     CONSTRAINT fk_mining_miner_offers_project FOREIGN KEY (project_key) REFERENCES miningcheck_projects(project_key) ON DELETE CASCADE
 );
 
+CREATE TABLE IF NOT EXISTS miningcheck_offer_basis_history (
+    id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
+    project_key VARCHAR(64) NOT NULL,
+    owner_sub VARCHAR(191) NOT NULL DEFAULT 'local',
+    offer_type VARCHAR(16) NOT NULL,
+    base_price_amount DECIMAL(20,8) NOT NULL,
+    base_price_currency VARCHAR(10) NOT NULL,
+    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    CONSTRAINT fk_mining_offer_basis_history_project FOREIGN KEY (project_key) REFERENCES miningcheck_projects(project_key) ON DELETE CASCADE,
+    KEY idx_mining_offer_basis_history_project_owner_type_created (project_key, owner_sub, offer_type, created_at)
+);
+
 CREATE TABLE IF NOT EXISTS miningcheck_targets (
     id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
     project_key VARCHAR(64) NOT NULL,

custom/apps/mining-checker/src/Api/Router.php

@@ -153,6 +153,15 @@ final class Router
                 $this->respond(['data' => $this->fxHistory()]);
             }
 
+            if ($resource === 'offer-basis-history' && $method === 'GET') {
+                $this->respond(['data' => $this->offerBasisHistory($projectKey)]);
+            }
+
+            if ($resource === 'offer-basis-history' && $method === 'POST') {
+                $this->repository()->ensureProject($projectKey);
+                $this->respond(['data' => $this->saveOfferBasisHistory($projectKey, Http::input())], 201);
+            }
+
             if ($resource === 'legacy-fx-migrate' && $method === 'POST') {
                 $this->respond(['data' => $this->migrateLegacyFxRates($projectKey)], 201);
             }
@@ -818,6 +827,11 @@ final class Router
         return $rows;
     }
 
+    private function offerBasisHistory(string $projectKey): array
+    {
+        return $this->repository()->listOfferBasisHistory($projectKey, 50);
+    }
+
     private function migrateLegacyFxRates(string $projectKey): array
     {
         $fxRepository = $this->sharedFxRatesRepository();
@@ -1694,6 +1708,21 @@ final class Router
         }
 
         $measurements = $this->measurements($projectKey, $settings);
+        $freshFetchId = null;
+        if ($settings['crypto_base_price_amount'] !== null) {
+            try {
+                $fresh = $this->fx()->refreshLatestRates(null, 'USD');
+                $freshFetchId = is_numeric($fresh['fetch_id'] ?? null) ? (int) $fresh['fetch_id'] : null;
+            } catch (\Throwable) {
+                $freshFetchId = null;
+            }
+        }
+        if ($freshFetchId !== null && $freshFetchId > 0 && $measurements !== []) {
+            $latestIndex = array_key_last($measurements);
+            if ($latestIndex !== null && is_array($measurements[$latestIndex])) {
+                $measurements[$latestIndex]['fx_fetch_id'] = $freshFetchId;
+            }
+        }
         $summary = $this->analytics()->buildSummary($measurements, $settings, [], [
             'include_offer_scenarios' => true,
             'include_long_term_projection' => true,
@@ -1701,9 +1730,38 @@ final class Router
 
         return [
             'miner_offers' => is_array($summary['miner_offers'] ?? null) ? $summary['miner_offers'] : [],
+            'fx_fetch_id' => $freshFetchId,
         ];
     }
 
+    private function saveOfferBasisHistory(string $projectKey, array $input): array
+    {
+        $offerType = $this->enumValue($input['offer_type'] ?? null, ['crypto', 'fiat'], 'offer_type');
+        $basePriceAmount = $this->requiredDecimal($input['base_price_amount'] ?? null, 'base_price_amount');
+        if ($basePriceAmount <= 0) {
+            throw new ApiException('base_price_amount muss groesser als 0 sein.', 422, ['field' => 'base_price_amount']);
+        }
+
+        $basePriceCurrency = $offerType === 'crypto'
+            ? $this->requiredCurrency($input['base_price_currency'] ?? 'USD', 'base_price_currency')
+            : 'EUR';
+
+        if ($offerType === 'crypto') {
+            $cryptoCurrency = $this->requiredCurrency($this->settings($projectKey)['crypto_currency'] ?? 'DOGE', 'crypto_currency');
+            if (!in_array($basePriceCurrency, ['USD', $cryptoCurrency], true)) {
+                throw new ApiException('Bei Crypto-Basispreisen sind nur USD oder die Projekt-Kryptowaehrung erlaubt.', 422, [
+                    'field' => 'base_price_currency',
+                ]);
+            }
+        }
+
+        return $this->repository()->saveOfferBasisEntry($projectKey, [
+            'offer_type' => $offerType,
+            'base_price_amount' => $basePriceAmount,
+            'base_price_currency' => $basePriceCurrency,
+        ]);
+    }
+
     private function purchasedMiners(string $projectKey): array
     {
         return $this->repository()->listPurchasedMiners($projectKey);

custom/apps/mining-checker/src/Domain/AnalyticsService.php

@@ -1188,6 +1188,23 @@ final class AnalyticsService
         }
         $referencePriceAmount = $basePriceAmount;
         $referencePriceCurrency = $basePriceCurrency !== '' ? $basePriceCurrency : null;
+        $cryptoDisplayAmount = null;
+        $cryptoDisplayCurrency = null;
+        $usdDisplayAmount = null;
+        $usdDisplayCurrency = null;
+
+        if ($paymentType === 'crypto') {
+            $cryptoDisplayCurrency = strtoupper(trim((string) ($settings['crypto_currency'] ?? 'DOGE')));
+            $cryptoDisplayAmount = $this->convertAmount($basePriceAmount, $basePriceCurrency, $cryptoDisplayCurrency, $latest);
+            if ($cryptoDisplayAmount === null && strtoupper($basePriceCurrency) === $cryptoDisplayCurrency) {
+                $cryptoDisplayAmount = $basePriceAmount;
+            }
+            $usdDisplayCurrency = 'USD';
+            $usdDisplayAmount = $this->convertAmount($basePriceAmount, $basePriceCurrency, 'USD', $latest);
+            if ($usdDisplayAmount === null && strtoupper($basePriceCurrency) === 'USD') {
+                $usdDisplayAmount = $basePriceAmount;
+            }
+        }
 
         $expectedDogePerDay = null;
         if ($currentHashrateMh > 0 && $offerHashrateMh > 0 && is_numeric($latest['doge_per_day_interval'] ?? null)) {
@@ -1202,16 +1219,11 @@ final class AnalyticsService
             ? $effectivePriceAmount / $expectedDailyRevenue
             : null;
 
-        $recommendation = 'keine Basis';
-        if ($breakEvenDays !== null) {
-            if ($breakEvenDays <= 180) {
-                $recommendation = 'lohnt eher';
-            } elseif ($breakEvenDays <= 365) {
-                $recommendation = 'abwaegen';
-            } else {
-                $recommendation = 'eher warten';
-            }
-        }
+        $recommendation = $this->offerRecommendation(
+            $breakEvenDays,
+            (int) ($offer['runtime_months'] ?? 0),
+            !empty($offer['auto_renew'])
+        );
 
         return array_merge($offer, [
             'payment_type' => $paymentType,
@@ -1222,6 +1234,10 @@ final class AnalyticsService
             'effective_price_currency' => $effectivePriceCurrency,
             'reference_price_amount' => $this->roundOrNull($referencePriceAmount, 8),
             'reference_price_currency' => $referencePriceCurrency !== '' ? $referencePriceCurrency : null,
+            'crypto_display_price_amount' => $this->roundOrNull($cryptoDisplayAmount, 8),
+            'crypto_display_price_currency' => $cryptoDisplayCurrency,
+            'usd_display_price_amount' => $this->roundOrNull($usdDisplayAmount, 8),
+            'usd_display_price_currency' => $usdDisplayCurrency,
             'expected_doge_per_day' => $this->roundOrNull($expectedDogePerDay, 6),
             'expected_daily_revenue' => $this->roundOrNull($expectedDailyRevenue, 8),
             'break_even_days' => $this->roundOrNull($breakEvenDays, 2),
@@ -1229,6 +1245,34 @@ final class AnalyticsService
         ]);
     }
 
+    private function offerRecommendation(?float $breakEvenDays, int $runtimeMonths, bool $autoRenew): string
+    {
+        if ($breakEvenDays === null) {
+            return 'keine Basis';
+        }
+
+        if (!$autoRenew && $runtimeMonths > 0) {
+            $runtimeDays = $runtimeMonths * 30.0;
+            if ($breakEvenDays <= ($runtimeDays * 0.85)) {
+                return 'lohnt eher';
+            }
+            if ($breakEvenDays <= $runtimeDays) {
+                return 'abwaegen';
+            }
+
+            return 'eher warten';
+        }
+
+        if ($breakEvenDays <= 180) {
+            return 'lohnt eher';
+        }
+        if ($breakEvenDays <= 365) {
+            return 'abwaegen';
+        }
+
+        return 'eher warten';
+    }
+
     private function enrichOfferScenario(array $offer, array $latest, float $currentHashrateMh, array $costPlans, array $purchasedMiners): array
     {
         $latestCurrency = (string) ($latest['effective_price_currency'] ?? $latest['price_currency'] ?? '');

custom/apps/mining-checker/src/Infrastructure/MiningRepository.php

@@ -111,6 +111,92 @@ final class MiningRepository
         ]);
     }
 
+    public function listOfferBasisHistory(string $projectKey, int $limit = 50): array
+    {
+        $stmt = $this->pdo->prepare(
+            'SELECT * FROM ' . $this->table('offer_basis_history') . '
+             WHERE project_key = :project_key AND owner_sub = :owner_sub
+             ORDER BY created_at DESC, id DESC
+             LIMIT :limit'
+        );
+        $stmt->bindValue(':project_key', $projectKey, PDO::PARAM_STR);
+        $stmt->bindValue(':owner_sub', $this->ownerSub, PDO::PARAM_STR);
+        $stmt->bindValue(':limit', $limit, PDO::PARAM_INT);
+        $stmt->execute();
+        return $this->normalizeRows($stmt->fetchAll() ?: []);
+    }
+
+    public function latestOfferBasisEntry(string $projectKey, string $offerType): ?array
+    {
+        $stmt = $this->pdo->prepare(
+            'SELECT * FROM ' . $this->table('offer_basis_history') . '
+             WHERE project_key = :project_key AND owner_sub = :owner_sub AND offer_type = :offer_type
+             ORDER BY created_at DESC, id DESC
+             LIMIT 1'
+        );
+        $stmt->execute([
+            'project_key' => $projectKey,
+            'owner_sub' => $this->ownerSub,
+            'offer_type' => strtolower(trim($offerType)),
+        ]);
+        $row = $stmt->fetch();
+        return is_array($row) ? $this->normalizeRow($row) : null;
+    }
+
+    public function saveOfferBasisEntry(string $projectKey, array $payload): array
+    {
+        $normalizedType = strtolower(trim((string) ($payload['offer_type'] ?? '')));
+        $latest = $this->latestOfferBasisEntry($projectKey, $normalizedType);
+        if (
+            is_array($latest)
+            && (string) ($latest['base_price_currency'] ?? '') === (string) ($payload['base_price_currency'] ?? '')
+            && is_numeric($latest['base_price_amount'] ?? null)
+            && is_numeric($payload['base_price_amount'] ?? null)
+            && abs((float) $latest['base_price_amount'] - (float) $payload['base_price_amount']) < 0.00000001
+        ) {
+            return $latest;
+        }
+
+        if ($this->driver === 'pgsql') {
+            $stmt = $this->pdo->prepare(
+                'INSERT INTO ' . $this->table('offer_basis_history') . ' (
+                    project_key, owner_sub, offer_type, base_price_amount, base_price_currency
+                 ) VALUES (
+                    :project_key, :owner_sub, :offer_type, :base_price_amount, :base_price_currency
+                 )
+                 RETURNING *'
+            );
+            $stmt->execute([
+                'project_key' => $projectKey,
+                'owner_sub' => $this->ownerSub,
+                'offer_type' => $normalizedType,
+                'base_price_amount' => $payload['base_price_amount'],
+                'base_price_currency' => $payload['base_price_currency'],
+            ]);
+            return $this->normalizeRow($stmt->fetch() ?: []);
+        }
+
+        $stmt = $this->pdo->prepare(
+            'INSERT INTO ' . $this->table('offer_basis_history') . ' (
+                project_key, owner_sub, offer_type, base_price_amount, base_price_currency
+             ) VALUES (
+                :project_key, :owner_sub, :offer_type, :base_price_amount, :base_price_currency
+             )'
+        );
+        $stmt->execute([
+            'project_key' => $projectKey,
+            'owner_sub' => $this->ownerSub,
+            'offer_type' => $normalizedType,
+            'base_price_amount' => $payload['base_price_amount'],
+            'base_price_currency' => $payload['base_price_currency'],
+        ]);
+
+        $id = (int) $this->pdo->lastInsertId();
+        $fetch = $this->pdo->prepare('SELECT * FROM ' . $this->table('offer_basis_history') . ' WHERE id = :id LIMIT 1');
+        $fetch->execute(['id' => $id]);
+        return $this->normalizeRow($fetch->fetch() ?: []);
+    }
+
     public function tableExists(string $logicalName): bool
     {
         $tableName = $this->table($logicalName);
@@ -1384,6 +1470,7 @@ final class MiningRepository
             'wallet_snapshots' => $this->prefix . 'wallet_snapshots',
             'wallet_withdrawals' => $this->prefix . 'wallet_withdrawals',
             'miner_offers' => $this->prefix . 'miner_offers',
+            'offer_basis_history' => $this->prefix . 'offer_basis_history',
             'purchased_miners' => $this->prefix . 'purchased_miners',
             default => throw new \RuntimeException('Unknown mining table: ' . $logicalName),
         };

custom/apps/mining-checker/src/Infrastructure/SchemaManager.php

@@ -217,6 +217,10 @@ final class SchemaManager
             $this->upgradeMinerOffersTable();
             $applied[] = 'miner_offers_table';
         }
+        if (!$this->tableExists($this->prefix . 'offer_basis_history')) {
+            $this->ensureOfferBasisHistoryTable();
+            $applied[] = 'offer_basis_history_table';
+        }
         if (!$this->tableExists($this->prefix . 'purchased_miners')) {
             $this->upgradePurchasedMinersTable();
             $applied[] = 'purchased_miners_table';
@@ -337,6 +341,10 @@ final class SchemaManager
             $this->upgradeMinerOffersTable();
             $applied[] = 'miner_offers_table';
         }
+        if (!$this->tableExists($this->prefix . 'offer_basis_history')) {
+            $this->ensureOfferBasisHistoryTable();
+            $applied[] = 'offer_basis_history_table';
+        }
 
         if (!$this->tableExists($this->prefix . 'purchased_miners')) {
             $this->upgradePurchasedMinersTable();
@@ -693,6 +701,9 @@ final class SchemaManager
         if (!$this->tableExists($this->prefix . 'miner_offers')) {
             $upgrades[] = 'miner_offers_table';
         }
+        if (!$this->tableExists($this->prefix . 'offer_basis_history')) {
+            $upgrades[] = 'offer_basis_history_table';
+        }
         if (!$this->tableExists($this->prefix . 'purchased_miners')) {
             $upgrades[] = 'purchased_miners_table';
         }
@@ -1179,6 +1190,45 @@ final class SchemaManager
         $this->executeUpgradeStatements($statements, 'Schema-Upgrade fuer Miner-Angebote fehlgeschlagen.');
     }
 
+    private function ensureOfferBasisHistoryTable(): void
+    {
+        if ($this->tableExists($this->prefix . 'offer_basis_history')) {
+            return;
+        }
+
+        $table = $this->prefix . 'offer_basis_history';
+        $projectTable = $this->prefix . 'projects';
+        $statements = $this->driver === 'pgsql'
+            ? [
+                'CREATE TABLE IF NOT EXISTS ' . $table . ' (
+                    id BIGSERIAL PRIMARY KEY,
+                    project_key VARCHAR(64) NOT NULL,
+                    owner_sub VARCHAR(191) NOT NULL DEFAULT \'local\',
+                    offer_type VARCHAR(16) NOT NULL,
+                    base_price_amount NUMERIC(20,8) NOT NULL,
+                    base_price_currency VARCHAR(10) NOT NULL,
+                    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+                    CONSTRAINT fk_mining_offer_basis_history_project FOREIGN KEY (project_key) REFERENCES ' . $projectTable . '(project_key) ON DELETE CASCADE
+                )',
+                'CREATE INDEX IF NOT EXISTS idx_mining_offer_basis_history_project_owner_type_created ON ' . $table . ' (project_key, owner_sub, offer_type, created_at)',
+            ]
+            : [
+                'CREATE TABLE IF NOT EXISTS `' . $table . '` (
+                    id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
+                    project_key VARCHAR(64) NOT NULL,
+                    owner_sub VARCHAR(191) NOT NULL DEFAULT \'local\',
+                    offer_type VARCHAR(16) NOT NULL,
+                    base_price_amount DECIMAL(20,8) NOT NULL,
+                    base_price_currency VARCHAR(10) NOT NULL,
+                    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+                    CONSTRAINT fk_mining_offer_basis_history_project FOREIGN KEY (project_key) REFERENCES `' . $projectTable . '`(project_key) ON DELETE CASCADE,
+                    KEY idx_mining_offer_basis_history_project_owner_type_created (project_key, owner_sub, offer_type, created_at)
+                )',
+            ];
+
+        $this->executeUpgradeStatements($statements, 'Schema-Upgrade fuer Angebots-Basis-Historie fehlgeschlagen.');
+    }
+
     private function upgradePurchasedMinersTable(): void
     {
         $table = $this->prefix . 'purchased_miners';
@@ -1528,6 +1578,7 @@ final class SchemaManager
             $this->prefix . 'wallet_snapshots',
             $this->prefix . 'wallet_withdrawals',
             $this->prefix . 'miner_offers',
+            $this->prefix . 'offer_basis_history',
             $this->prefix . 'targets',
             $this->prefix . 'dashboard_definitions',
             $this->prefix . 'purchased_miners',