Added expenses to plan

apis/expenses.go

@@ -0,0 +1,231 @@
+package apis
+
+import (
+	"net/http"
+	"planner/core"
+	"slices"
+	"strconv"
+
+	"github.com/gin-gonic/gin"
+	"github.com/shopspring/decimal"
+)
+
+type ExpenseDef struct {
+	Payer  string          `json:"payer"`
+	Type   string          `json:"type"`
+	Amount decimal.Decimal `json:"amount"`
+}
+
+func createExpense(c *gin.Context) {
+	u := extractUser(db, c)
+	if u == nil {
+		c.Status(http.StatusUnauthorized)
+		return
+	}
+
+	plan_id, err := strconv.ParseInt(c.Param("id"), 10, 32)
+	if err != nil || plan_id < 0 {
+		c.Status(http.StatusBadRequest)
+		return
+	}
+	plan, err := u.GetPlan(db, uint(plan_id))
+	if err != nil {
+		c.Status(http.StatusBadRequest)
+		return
+	}
+
+	members, err := plan.GetAllUsers(db)
+	if err != nil {
+		c.Status(http.StatusInternalServerError)
+		return
+	}
+	var exp ExpenseDef
+	if err := c.ShouldBind(&exp); err != nil {
+		c.Status(http.StatusBadRequest)
+		return
+	}
+
+	var compare func(m core.Member) bool
+
+	if exp.Type == "user" {
+		compare = func(m core.Member) bool {
+			return m.UserID == exp.Payer
+		}
+	} else if exp.Type == "non-user" {
+		compare = func(m core.Member) bool {
+			return m.Name == exp.Payer
+		}
+	} else {
+		c.String(http.StatusBadRequest, "Invalid member type")
+		return
+	}
+	idx := slices.IndexFunc(members, compare)
+	if idx != -1 {
+		expense, err := core.CreateExpense(db, plan, members[idx], exp.Amount)
+		if err != nil {
+			c.Status(http.StatusInternalServerError)
+			return
+		}
+		c.JSON(http.StatusOK, expense)
+		return
+	}
+	c.String(http.StatusBadRequest, "Unable to found member")
+}
+
+func listExpenses(c *gin.Context) {
+	u := extractUser(db, c)
+	if u == nil {
+		c.Status(http.StatusUnauthorized)
+		return
+	}
+
+	plan_id, err := strconv.ParseInt(c.Param("id"), 10, 32)
+	if err != nil || plan_id < 0 {
+		c.Status(http.StatusBadRequest)
+		return
+	}
+	plan, err := u.GetPlan(db, uint(plan_id))
+	if err != nil {
+		c.Status(http.StatusBadRequest)
+		return
+	}
+	expenses, err := core.ListExpenses(db, plan)
+	if err != nil {
+		c.Status(http.StatusInternalServerError)
+		return
+	}
+	c.JSON(http.StatusOK, expenses)
+}
+
+func getExpense(c *gin.Context) {
+	u := extractUser(db, c)
+	if u == nil {
+		c.Status(http.StatusUnauthorized)
+		return
+	}
+
+	expense_id, err := strconv.ParseInt(c.Param("id"), 10, 32)
+	if err != nil || expense_id < 0 {
+		c.Status(http.StatusBadRequest)
+		return
+	}
+	expense, err := core.GetExpense(db, uint(expense_id))
+	if err != nil {
+		c.Status(http.StatusBadRequest)
+		return
+	}
+	_, err = u.GetPlan(db, expense.PlanID)
+	if err != nil {
+		c.Status(http.StatusBadRequest)
+		return
+	}
+
+	c.JSON(http.StatusOK, expense)
+}
+
+func deleteExpense(c *gin.Context) {
+	u := extractUser(db, c)
+	if u == nil {
+		c.Status(http.StatusUnauthorized)
+		return
+	}
+
+	expense_id, err := strconv.ParseInt(c.Param("id"), 10, 32)
+	if err != nil || expense_id < 0 {
+		c.Status(http.StatusBadRequest)
+		return
+	}
+	expense, err := core.GetExpense(db, uint(expense_id))
+	if err != nil {
+		c.Status(http.StatusBadRequest)
+		return
+	}
+	_, err = u.GetPlan(db, expense.PlanID)
+	if err != nil {
+		c.Status(http.StatusBadRequest)
+		return
+	}
+
+	if err = expense.Delete(db); err != nil {
+		c.Status(http.StatusInternalServerError)
+		return
+	}
+
+	c.Status(http.StatusOK)
+}
+
+func getExpenseDebts(c *gin.Context) {
+	u := extractUser(db, c)
+	if u == nil {
+		c.Status(http.StatusUnauthorized)
+		return
+	}
+
+	expense_id, err := strconv.ParseInt(c.Param("id"), 10, 32)
+	if err != nil || expense_id < 0 {
+		c.Status(http.StatusBadRequest)
+		return
+	}
+	expense, err := core.GetExpense(db, uint(expense_id))
+	if err != nil {
+		c.Status(http.StatusBadRequest)
+		return
+	}
+	_, err = u.GetPlan(db, expense.PlanID)
+	if err != nil {
+		c.Status(http.StatusBadRequest)
+		return
+	}
+
+	debts, err := expense.GetDebt(db)
+	if err != nil {
+		c.Status(http.StatusInternalServerError)
+		return
+	}
+
+	c.JSON(http.StatusOK, debts)
+}
+
+func setExpenseDebts(c *gin.Context) {
+	u := extractUser(db, c)
+	if u == nil {
+		c.Status(http.StatusUnauthorized)
+		return
+	}
+
+	expense_id, err := strconv.ParseInt(c.Param("id"), 10, 32)
+	if err != nil || expense_id < 0 {
+		c.Status(http.StatusBadRequest)
+		return
+	}
+	expense, err := core.GetExpense(db, uint(expense_id))
+	if err != nil {
+		c.Status(http.StatusBadRequest)
+		return
+	}
+	plan, err := u.GetPlan(db, expense.PlanID)
+	if err != nil {
+		c.Status(http.StatusBadRequest)
+		return
+	}
+	expense.Plan = plan
+
+	var debtSpec []core.DebtSpec
+	if err := c.ShouldBind(&debtSpec); err != nil {
+		c.Status(http.StatusBadRequest)
+		return
+	}
+
+	//expense.SetDebt(db, debtSpec)
+
+	c.JSON(http.StatusOK, debtSpec)
+}
+
+func bindExpensesAPIs(r *gin.Engine) {
+	r.POST("/plans/:id/expenses", createExpense)
+	r.GET("/plans/:id/expenses", listExpenses)
+	r.GET("/expenses/:id", getExpense)
+	r.DELETE("/expenses/:id", deleteExpense)
+	r.GET("/expenses/:id/debts", getExpenseDebts)
+	r.POST("/expenses/:id/debts", setExpenseDebts)
+}