feat(channel): 渠道管理系统 — 多模式定价 + 统一计费解析

Cherry-picked from release/custom-0.1.106: a9117600
2026-04-04 11:00:55 +08:00
parent b384570de3
commit 91c9b8d062
27 changed files with 3682 additions and 8 deletions
@@ -0,0 +1,285 @@
+package repository
+
+import (
+	"context"
+	"database/sql"
+	"encoding/json"
+	"fmt"
+	"strings"
+
+	"github.com/Wei-Shaw/sub2api/internal/service"
+	"github.com/lib/pq"
+)
+
+// --- 模型定价 ---
+
+func (r *channelRepository) ListModelPricing(ctx context.Context, channelID int64) ([]service.ChannelModelPricing, error) {
+	rows, err := r.db.QueryContext(ctx,
+		`SELECT id, channel_id, models, billing_mode, input_price, output_price, cache_write_price, cache_read_price, image_output_price, created_at, updated_at
+		 FROM channel_model_pricing WHERE channel_id = $1 ORDER BY id`, channelID,
+	)
+	if err != nil {
+		return nil, fmt.Errorf("list model pricing: %w", err)
+	}
+	defer rows.Close()
+
+	result, pricingIDs, err := scanModelPricingRows(rows)
+	if err != nil {
+		return nil, err
+	}
+
+	if len(pricingIDs) > 0 {
+		intervalMap, err := r.batchLoadIntervals(ctx, pricingIDs)
+		if err != nil {
+			return nil, err
+		}
+		for i := range result {
+			result[i].Intervals = intervalMap[result[i].ID]
+		}
+	}
+
+	return result, nil
+}
+
+func (r *channelRepository) CreateModelPricing(ctx context.Context, pricing *service.ChannelModelPricing) error {
+	return createModelPricingExec(ctx, r.db, pricing)
+}
+
+func (r *channelRepository) UpdateModelPricing(ctx context.Context, pricing *service.ChannelModelPricing) error {
+	modelsJSON, err := json.Marshal(pricing.Models)
+	if err != nil {
+		return fmt.Errorf("marshal models: %w", err)
+	}
+	billingMode := pricing.BillingMode
+	if billingMode == "" {
+		billingMode = service.BillingModeToken
+	}
+	result, err := r.db.ExecContext(ctx,
+		`UPDATE channel_model_pricing
+		 SET models = $1, billing_mode = $2, input_price = $3, output_price = $4, cache_write_price = $5, cache_read_price = $6, image_output_price = $7, updated_at = NOW()
+		 WHERE id = $8`,
+		modelsJSON, billingMode, pricing.InputPrice, pricing.OutputPrice, pricing.CacheWritePrice, pricing.CacheReadPrice,
+		pricing.ImageOutputPrice, pricing.ID,
+	)
+	if err != nil {
+		return fmt.Errorf("update model pricing: %w", err)
+	}
+	rows, _ := result.RowsAffected()
+	if rows == 0 {
+		return fmt.Errorf("pricing entry not found: %d", pricing.ID)
+	}
+	return nil
+}
+
+func (r *channelRepository) DeleteModelPricing(ctx context.Context, id int64) error {
+	_, err := r.db.ExecContext(ctx, `DELETE FROM channel_model_pricing WHERE id = $1`, id)
+	if err != nil {
+		return fmt.Errorf("delete model pricing: %w", err)
+	}
+	return nil
+}
+
+func (r *channelRepository) ReplaceModelPricing(ctx context.Context, channelID int64, pricingList []service.ChannelModelPricing) error {
+	return r.runInTx(ctx, func(tx *sql.Tx) error {
+		return replaceModelPricingTx(ctx, tx, channelID, pricingList)
+	})
+}
+
+// --- 批量加载辅助方法 ---
+
+// batchLoadModelPricing 批量加载多个渠道的模型定价（含区间）
+func (r *channelRepository) batchLoadModelPricing(ctx context.Context, channelIDs []int64) (map[int64][]service.ChannelModelPricing, error) {
+	rows, err := r.db.QueryContext(ctx,
+		`SELECT id, channel_id, models, billing_mode, input_price, output_price, cache_write_price, cache_read_price, image_output_price, created_at, updated_at
+		 FROM channel_model_pricing WHERE channel_id = ANY($1) ORDER BY channel_id, id`,
+		pq.Array(channelIDs),
+	)
+	if err != nil {
+		return nil, fmt.Errorf("batch load model pricing: %w", err)
+	}
+	defer rows.Close()
+
+	allPricing, allPricingIDs, err := scanModelPricingRows(rows)
+	if err != nil {
+		return nil, err
+	}
+
+	// 按 channelID 分组
+	pricingMap := make(map[int64][]service.ChannelModelPricing, len(channelIDs))
+	for _, p := range allPricing {
+		pricingMap[p.ChannelID] = append(pricingMap[p.ChannelID], p)
+	}
+
+	// 批量加载所有区间
+	if len(allPricingIDs) > 0 {
+		intervalMap, err := r.batchLoadIntervals(ctx, allPricingIDs)
+		if err != nil {
+			return nil, err
+		}
+		for chID := range pricingMap {
+			for i := range pricingMap[chID] {
+				pricingMap[chID][i].Intervals = intervalMap[pricingMap[chID][i].ID]
+			}
+		}
+	}
+
+	return pricingMap, nil
+}
+
+// batchLoadIntervals 批量加载多个定价条目的区间
+func (r *channelRepository) batchLoadIntervals(ctx context.Context, pricingIDs []int64) (map[int64][]service.PricingInterval, error) {
+	rows, err := r.db.QueryContext(ctx,
+		`SELECT id, pricing_id, min_tokens, max_tokens, tier_label,
+		        input_price, output_price, cache_write_price, cache_read_price,
+		        per_request_price, sort_order, created_at, updated_at
+		 FROM channel_pricing_intervals
+		 WHERE pricing_id = ANY($1) ORDER BY pricing_id, sort_order, id`,
+		pq.Array(pricingIDs),
+	)
+	if err != nil {
+		return nil, fmt.Errorf("batch load intervals: %w", err)
+	}
+	defer rows.Close()
+
+	intervalMap := make(map[int64][]service.PricingInterval, len(pricingIDs))
+	for rows.Next() {
+		var iv service.PricingInterval
+		if err := rows.Scan(
+			&iv.ID, &iv.PricingID, &iv.MinTokens, &iv.MaxTokens, &iv.TierLabel,
+			&iv.InputPrice, &iv.OutputPrice, &iv.CacheWritePrice, &iv.CacheReadPrice,
+			&iv.PerRequestPrice, &iv.SortOrder, &iv.CreatedAt, &iv.UpdatedAt,
+		); err != nil {
+			return nil, fmt.Errorf("scan interval: %w", err)
+		}
+		intervalMap[iv.PricingID] = append(intervalMap[iv.PricingID], iv)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("iterate intervals: %w", err)
+	}
+	return intervalMap, nil
+}
+
+// --- 共享 scan 辅助 ---
+
+// scanModelPricingRows 扫描 model pricing 行，返回结果列表和 ID 列表
+func scanModelPricingRows(rows *sql.Rows) ([]service.ChannelModelPricing, []int64, error) {
+	var result []service.ChannelModelPricing
+	var pricingIDs []int64
+	for rows.Next() {
+		var p service.ChannelModelPricing
+		var modelsJSON []byte
+		if err := rows.Scan(
+			&p.ID, &p.ChannelID, &modelsJSON, &p.BillingMode,
+			&p.InputPrice, &p.OutputPrice, &p.CacheWritePrice, &p.CacheReadPrice,
+			&p.ImageOutputPrice, &p.CreatedAt, &p.UpdatedAt,
+		); err != nil {
+			return nil, nil, fmt.Errorf("scan model pricing: %w", err)
+		}
+		if err := json.Unmarshal(modelsJSON, &p.Models); err != nil {
+			p.Models = []string{}
+		}
+		pricingIDs = append(pricingIDs, p.ID)
+		result = append(result, p)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, nil, fmt.Errorf("iterate model pricing: %w", err)
+	}
+	return result, pricingIDs, nil
+}
+
+// --- 事务内辅助方法 ---
+
+// dbExec 是 *sql.DB 和 *sql.Tx 共享的最小 SQL 执行接口
+type dbExec interface {
+	ExecContext(ctx context.Context, query string, args ...any) (sql.Result, error)
+	QueryContext(ctx context.Context, query string, args ...any) (*sql.Rows, error)
+	QueryRowContext(ctx context.Context, query string, args ...any) *sql.Row
+}
+
+func setGroupIDsTx(ctx context.Context, exec dbExec, channelID int64, groupIDs []int64) error {
+	if _, err := exec.ExecContext(ctx, `DELETE FROM channel_groups WHERE channel_id = $1`, channelID); err != nil {
+		return fmt.Errorf("delete old group associations: %w", err)
+	}
+	if len(groupIDs) == 0 {
+		return nil
+	}
+	_, err := exec.ExecContext(ctx,
+		`INSERT INTO channel_groups (channel_id, group_id)
+		 SELECT $1, unnest($2::bigint[])`,
+		channelID, pq.Array(groupIDs),
+	)
+	if err != nil {
+		return fmt.Errorf("insert group associations: %w", err)
+	}
+	return nil
+}
+
+func createModelPricingExec(ctx context.Context, exec dbExec, pricing *service.ChannelModelPricing) error {
+	modelsJSON, err := json.Marshal(pricing.Models)
+	if err != nil {
+		return fmt.Errorf("marshal models: %w", err)
+	}
+	billingMode := pricing.BillingMode
+	if billingMode == "" {
+		billingMode = service.BillingModeToken
+	}
+	err = exec.QueryRowContext(ctx,
+		`INSERT INTO channel_model_pricing (channel_id, models, billing_mode, input_price, output_price, cache_write_price, cache_read_price, image_output_price)
+		 VALUES ($1, $2, $3, $4, $5, $6, $7, $8) RETURNING id, created_at, updated_at`,
+		pricing.ChannelID, modelsJSON, billingMode,
+		pricing.InputPrice, pricing.OutputPrice, pricing.CacheWritePrice, pricing.CacheReadPrice,
+		pricing.ImageOutputPrice,
+	).Scan(&pricing.ID, &pricing.CreatedAt, &pricing.UpdatedAt)
+	if err != nil {
+		return fmt.Errorf("insert model pricing: %w", err)
+	}
+
+	for i := range pricing.Intervals {
+		pricing.Intervals[i].PricingID = pricing.ID
+		if err := createIntervalExec(ctx, exec, &pricing.Intervals[i]); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func createIntervalExec(ctx context.Context, exec dbExec, iv *service.PricingInterval) error {
+	return exec.QueryRowContext(ctx,
+		`INSERT INTO channel_pricing_intervals
+		 (pricing_id, min_tokens, max_tokens, tier_label, input_price, output_price, cache_write_price, cache_read_price, per_request_price, sort_order)
+		 VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10) RETURNING id, created_at, updated_at`,
+		iv.PricingID, iv.MinTokens, iv.MaxTokens, iv.TierLabel,
+		iv.InputPrice, iv.OutputPrice, iv.CacheWritePrice, iv.CacheReadPrice,
+		iv.PerRequestPrice, iv.SortOrder,
+	).Scan(&iv.ID, &iv.CreatedAt, &iv.UpdatedAt)
+}
+
+func replaceModelPricingTx(ctx context.Context, exec dbExec, channelID int64, pricingList []service.ChannelModelPricing) error {
+	if _, err := exec.ExecContext(ctx, `DELETE FROM channel_model_pricing WHERE channel_id = $1`, channelID); err != nil {
+		return fmt.Errorf("delete old model pricing: %w", err)
+	}
+	for i := range pricingList {
+		pricingList[i].ChannelID = channelID
+		if err := createModelPricingExec(ctx, exec, &pricingList[i]); err != nil {
+			return fmt.Errorf("insert model pricing: %w", err)
+		}
+	}
+	return nil
+}
+
+// isUniqueViolation 检查 pq 唯一约束违反错误
+func isUniqueViolation(err error) bool {
+	if pqErr, ok := err.(*pq.Error); ok {
+		return pqErr.Code == "23505"
+	}
+	return false
+}
+
+// escapeLike 转义 LIKE/ILIKE 模式中的特殊字符
+func escapeLike(s string) string {
+	s = strings.ReplaceAll(s, `\`, `\\`)
+	s = strings.ReplaceAll(s, `%`, `\%`)
+	s = strings.ReplaceAll(s, `_`, `\_`)
+	return s
+}