add stats api impl

script/bql.go

@@ -16,7 +16,8 @@ type QueryParams struct {
 	Month       int    `bql:"month ="`
 	Tag         string `bql:"in tags"`
 	Account     string `bql:"account ="`
-	AccountType string `bql:"account ~"`
+	AccountLike string `bql:"account ~"`
+	GroupBy     string `bql:"group by"`
 	OrderBy     string `bql:"order by"`
 	Limit       int    `bql:"limit"`
 	Path        string
@@ -44,7 +45,7 @@ func GetQueryParams(c *gin.Context) QueryParams {
 		hasWhere = true
 	}
 	if c.Query("type") != "" {
-		queryParams.AccountType = c.Query("type")
+		queryParams.AccountLike = c.Query("type")
 		hasWhere = true
 	}
 	if c.Query("account") != "" {
@@ -138,7 +139,7 @@ func bqlRawQuery(ledgerConfig *Config, selectBql string, queryParamsPtr *QueryPa
 			case reflect.String:
 				val := valueField.String()
 				if val != "" {
-					if typeField.Name == "OrderBy" {
+					if typeField.Name == "OrderBy" || typeField.Name == "GroupBy" {
 						// 去除上一个条件后缀的 AND 关键字
 						bql = strings.Trim(bql, " AND")
 						bql = fmt.Sprintf("%s %s %s", bql, typeField.Tag.Get("bql"), val)

server.go

@@ -54,6 +54,8 @@ func RegisterRouter(router *gin.Engine) {
 		authorized.GET("/account/type", service.QueryAccountType)
 		authorized.GET("/stats/months", service.MonthsList)
 		authorized.GET("/stats/total", service.StatsTotal)
+		authorized.GET("/stats/account/percent", service.StatsAccountPercent)
+		authorized.GET("/stats/account/trend", service.StatsAccountTrend)
 		authorized.GET("/transaction", service.QueryTransactions)
 		authorized.GET("/transaction/payee", service.QueryTransactionPayees)
 		authorized.GET("/transaction/template", service.QueryTransactionTemplates)

service/stats.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"github.com/beancount-gs/script"
 	"github.com/gin-gonic/gin"
+	"strconv"
 	"strings"
 )
 
@@ -27,16 +28,16 @@ func MonthsList(c *gin.Context) {
 	OK(c, months)
 }
 
-type statsAccountTypeTotal struct {
-	AccountType string
-	Amount      string
+type StatsResult struct {
+	Key   string
+	Value string
 }
 
 func StatsTotal(c *gin.Context) {
 	ledgerConfig := script.GetLedgerConfigFromContext(c)
 	queryParams := script.GetQueryParams(c)
 	selectBql := fmt.Sprintf("SELECT '\\', root(account, 1), '\\', sum(convert(value(position), '%s')), '\\'", ledgerConfig.OperatingCurrency)
-	accountTypeTotalList := make([]statsAccountTypeTotal, 0)
+	accountTypeTotalList := make([]StatsResult, 0)
 	err := script.BQLQueryListByCustomSelect(ledgerConfig, selectBql, &queryParams, &accountTypeTotalList)
 	if err != nil {
 		InternalError(c, err.Error())
@@ -45,11 +46,108 @@ func StatsTotal(c *gin.Context) {
 
 	result := make(map[string]string, 0)
 	for _, total := range accountTypeTotalList {
-		fields := strings.Fields(total.Amount)
+		fields := strings.Fields(total.Value)
 		if len(fields) > 1 {
-			result[total.AccountType] = fields[0]
+			result[total.Key] = fields[0]
 		}
 	}
 
 	OK(c, result)
 }
+
+type StatsQuery struct {
+	Prefix string `form:"prefix" binding:"required"`
+	Year   int    `form:"year"`
+	Month  int    `form:"month"`
+	Level  int    `form:"level"`
+	Type   string `form:"type"`
+}
+
+type AccountPercentResult struct {
+	Account           string `json:"account"`
+	Amount            string `json:"amount"`
+	OperatingCurrency string `json:"operatingCurrency"`
+}
+
+func StatsAccountPercent(c *gin.Context) {
+	ledgerConfig := script.GetLedgerConfigFromContext(c)
+	var statsQuery StatsQuery
+	if err := c.ShouldBindQuery(&statsQuery); err != nil {
+		BadRequest(c, err.Error())
+		return
+	}
+
+	queryParams := script.QueryParams{
+		AccountLike: statsQuery.Prefix,
+		Year:        statsQuery.Year,
+		Month:       statsQuery.Month,
+		Where:       true,
+	}
+	var bql string
+	if statsQuery.Level != 0 {
+		prefixNodeLen := len(strings.Split(strings.Trim(statsQuery.Prefix, ":"), ":"))
+		bql = fmt.Sprintf("SELECT '\\', root(account, %d) as subAccount, '\\', sum(convert(value(position), '%s')), '\\'", statsQuery.Level+prefixNodeLen, ledgerConfig.OperatingCurrency)
+	} else {
+		bql = fmt.Sprintf("SELECT '\\', account, '\\', sum(convert(value(position), '%s')), '\\'", ledgerConfig.OperatingCurrency)
+	}
+
+	statsResultList := make([]AccountPercentResult, 0)
+	err := script.BQLQueryListByCustomSelect(ledgerConfig, bql, &queryParams, &statsResultList)
+	if err != nil {
+		InternalError(c, err.Error())
+		return
+	}
+
+	for idx, result := range statsResultList {
+		fields := strings.Fields(result.Amount)
+		statsResultList[idx].Amount = fields[0]
+		statsResultList[idx].OperatingCurrency = fields[1]
+	}
+	OK(c, statsResultList)
+}
+
+type AccountTrendResult struct {
+	Date              string  `json:"date"`
+	Amount            float64 `json:"amount"`
+	OperatingCurrency string  `json:"operatingCurrency"`
+}
+
+func StatsAccountTrend(c *gin.Context) {
+	ledgerConfig := script.GetLedgerConfigFromContext(c)
+	var statsQuery StatsQuery
+	if err := c.ShouldBindQuery(&statsQuery); err != nil {
+		BadRequest(c, err.Error())
+		return
+	}
+
+	queryParams := script.QueryParams{
+		AccountLike: statsQuery.Prefix,
+		Year:        statsQuery.Year,
+		Month:       statsQuery.Month,
+		Where:       true,
+	}
+	var bql string
+	if statsQuery.Type == "avg" {
+		bql = fmt.Sprintf("SELECT '\\', date, '\\', sum(convert(value(position), '%s')), '\\'", ledgerConfig.OperatingCurrency)
+	} else if statsQuery.Type == "sum" {
+		bql = fmt.Sprintf("SELECT '\\', date, '\\', convert(balance, '%s'), '\\'", ledgerConfig.OperatingCurrency)
+	} else {
+		OK(c, new([]string))
+		return
+	}
+
+	statsResultList := make([]StatsResult, 0)
+	err := script.BQLQueryListByCustomSelect(ledgerConfig, bql, &queryParams, &statsResultList)
+	if err != nil {
+		InternalError(c, err.Error())
+		return
+	}
+
+	result := make([]AccountTrendResult, 0)
+	for _, stats := range statsResultList {
+		fields := strings.Fields(stats.Value)
+		amount, _ := strconv.ParseFloat(fields[0], 32)
+		result = append(result, AccountTrendResult{Date: stats.Key, Amount: amount, OperatingCurrency: fields[1]})
+	}
+	OK(c, result)
+}