package api

import (
	"database/sql"
	"net/http"

	"atlas9.dev/c/core/dbi"
	"atlas9.dev/c/core/iam"
	"atlas9.dev/c/demo/lib"
)

type GrantsImpl struct {
	DB     *sql.DB
	Guard  lib.Guard
	Grants dbi.Factory[iam.GrantStore]
}

func (s *GrantsImpl) Add(w http.ResponseWriter, r *http.Request) {

	// Read and validate the request body
	var req Grants_AddReq
	if read(w, r, &req) {
		return
	}

	// Check access
	if check(w, r, s.Guard, iam.CapGrantsAdd, req.Grant.Tenant, "") {
		return
	}

	// Write to the database
	ctx := r.Context()
	err := dbi.ReadWrite(ctx, s.DB, func(tx dbi.DBI) error {
		return s.Grants(tx).Add(ctx, req.Grant)
	})

	write(ctx, w, err, nil)
}

func (s *GrantsImpl) Remove(w http.ResponseWriter, r *http.Request) {

	// Read and validate the request body
	var req Grants_RemoveReq
	if read(w, r, &req) {
		return
	}

	// Check access
	if check(w, r, s.Guard, iam.CapGrantsRemove, req.Grant.Tenant, "") {
		return
	}

	// Write to the database
	ctx := r.Context()
	err := dbi.ReadWrite(ctx, s.DB, func(tx dbi.DBI) error {
		return s.Grants(tx).Remove(ctx, req.Grant)
	})

	write(ctx, w, err, nil)
}

func (s *GrantsImpl) List(w http.ResponseWriter, r *http.Request) {

	// Read and validate the request body
	var req Grants_ListReq
	if read(w, r, &req) {
		return
	}

	// Check access
	if checkSystem(w, r, s.Guard, iam.CapGrantsList) {
		return
	}

	// Load the data from the database
	ctx := r.Context()
	var res Grants_ListRes
	err := dbi.ReadOnly(ctx, s.DB, func(tx dbi.DBI) error {
		return s.Grants(tx).ListForUser(ctx, req.UserID, req.Page, &res.Page)
	})

	write(ctx, w, err, res)
}

func (s *GrantsImpl) ListByTenant(w http.ResponseWriter, r *http.Request) {

	// Read and validate the request body
	var req Grants_ListByTenantReq
	if read(w, r, &req) {
		return
	}

	// Check access
	if check(w, r, s.Guard, iam.CapGrantsList, req.Tenant, "") {
		return
	}

	// Load the data from the database
	ctx := r.Context()
	var res Grants_ListRes
	err := dbi.ReadOnly(ctx, s.DB, func(tx dbi.DBI) error {
		return s.Grants(tx).List(ctx, req.Tenant, req.Page, &res.Page)
	})

	write(ctx, w, err, res)
}