Ilia Denisov
70 lines
1.7 KiB
Go
70 lines
1.7 KiB
Go
package handler
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import (
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"encoding/json"
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"fmt"
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"net/http"
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"github.com/iliadenisov/galaxy/internal/controller"
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"github.com/gin-gonic/gin"
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"github.com/iliadenisov/galaxy/internal/model/rest"
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)
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func CommandHandler(c *gin.Context, executor CommandExecutor) {
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var cmd rest.Command
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if errorResponded(c, c.ShouldBindJSON(&cmd)) {
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return
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}
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commands := make([]Command, 0)
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for i := range cmd.Commands {
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command, err := parseCommand(cmd.Actor, cmd.Commands[i])
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if errorResponded(c, err) {
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return
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}
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commands = append(commands, command)
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}
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if len(commands) == 0 {
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c.JSON(http.StatusBadRequest, gin.H{"error": "no commands given"})
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return
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}
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if errorResponded(c, executor.Execute(commands...)) {
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return
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}
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c.Status(http.StatusNoContent)
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}
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func parseCommand(actor string, c json.RawMessage) (Command, error) {
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meta := new(rest.CommandMeta)
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if err := json.Unmarshal(c, meta); err != nil {
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return nil, err
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}
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switch t := meta.Type; t {
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case rest.CommandTypeRaceVote:
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return giveVotes(actor, c)
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case rest.CommandTypeRaceRelation:
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return updateRelation(actor, c)
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default:
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return nil, fmt.Errorf("unknown comman type: %s", t)
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}
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}
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func giveVotes(actor string, c json.RawMessage) (Command, error) {
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var v rest.CommandVote
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if err := json.Unmarshal(c, &v); err != nil {
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return nil, err
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}
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return func(c controller.Ctrl) error { return c.RaceVote(actor, v.Recipient) }, nil
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}
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func updateRelation(actor string, c json.RawMessage) (Command, error) {
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var v rest.CommandUpdateRelation
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if err := json.Unmarshal(c, &v); err != nil {
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return nil, err
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}
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return func(c controller.Ctrl) error { return c.RaceRelation(actor, v.Opponent, v.Relation) }, nil
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}
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