af83/edwig

package api

import (
    "encoding/json"
    "fmt"
    "net/http"
    "net/url"

    "bitbucket.org/enroute-mobi/ara/core"
    "bitbucket.org/enroute-mobi/ara/logger"
    "bitbucket.org/enroute-mobi/ara/model"
)

type LineController struct {
    referential *core.Referential
}

func NewLineController(referential *core.Referential) ControllerInterface {
    return &Controller{
        restfulResource: &LineController{
            referential: referential,
        },
    }
}

func (controller *LineController) findLine(identifier string) (*model.Line, bool) {
    foundStrings := idPattern.FindStringSubmatch(identifier)
    if foundStrings != nil {
        code := model.NewCode(foundStrings[1], foundStrings[2])
        return controller.referential.Model().Lines().FindByCode(code)
    }
    return controller.referential.Model().Lines().Find(model.LineId(identifier))
}

func (controller *LineController) Index(response http.ResponseWriter, filters url.Values) {
    logger.Log.Debugf("Lines Index")

    jsonBytes, _ := json.Marshal(controller.referential.Model().Lines().FindAll())
    response.Write(jsonBytes)
}

func (controller *LineController) Show(response http.ResponseWriter, identifier string) {
    line, ok := controller.findLine(identifier)
    if !ok {
        http.Error(response, fmt.Sprintf("Line not found: %s", identifier), http.StatusNotFound)
        return
    }
    logger.Log.Debugf("Get line %s", identifier)

    jsonBytes, _ := line.MarshalJSON()
    response.Write(jsonBytes)
}

func (controller *LineController) Delete(response http.ResponseWriter, identifier string) {
    line, ok := controller.findLine(identifier)
    if !ok {
        http.Error(response, fmt.Sprintf("Line not found: %s", identifier), http.StatusNotFound)
        return
    }
    logger.Log.Debugf("Delete line %s", identifier)

    jsonBytes, _ := line.MarshalJSON()
    controller.referential.Model().Lines().Delete(line)

    response.Write(jsonBytes)
}

func (controller *LineController) Update(response http.ResponseWriter, identifier string, body []byte) {
    line, ok := controller.findLine(identifier)
    if !ok {
        http.Error(response, fmt.Sprintf("Line not found: %s", identifier), http.StatusNotFound)
        return
    }

    logger.Log.Debugf("Update line %s: %s", identifier, string(body))

    err := json.Unmarshal(body, &line)
    if err != nil {
        http.Error(response, fmt.Sprintf("Invalid request: can't parse request body: %v", err), http.StatusBadRequest)
        return
    }

    for _, obj := range line.Codes() {
        l, ok := controller.referential.Model().Lines().FindByCode(obj)
        if ok && l.Id() != line.Id() {
            http.Error(response, fmt.Sprintf("Invalid request: line %v already have a code %v", l.Id(), obj.String()), http.StatusBadRequest)
            return
        }
    }

    controller.referential.Model().Lines().Save(line)
    jsonBytes, _ := json.Marshal(&line)
    response.Write(jsonBytes)
}

func (controller *LineController) Create(response http.ResponseWriter, body []byte) {
    logger.Log.Debugf("Create line: %s", string(body))

    line := controller.referential.Model().Lines().New()

    err := json.Unmarshal(body, &line)
    if err != nil {
        http.Error(response, fmt.Sprintf("Invalid request: can't parse request body: %v", err), http.StatusBadRequest)
        return
    }

    if line.Id() != "" {
        http.Error(response, "Invalid request", http.StatusBadRequest)
        return
    }

    for _, obj := range line.Codes() {
        l, ok := controller.referential.Model().Lines().FindByCode(obj)
        if ok {
            http.Error(response, fmt.Sprintf("Invalid request: line %v already have a code %v", l.Id(), obj.String()), http.StatusBadRequest)
            return
        }
    }

    controller.referential.Model().Lines().Save(line)
    jsonBytes, _ := json.Marshal(&line)
    response.Write(jsonBytes)
}