Store things in sqlite
This commit is contained in:
15
go.mod
15
go.mod
@ -1,3 +1,18 @@
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module furnacecheck
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go 1.24.4
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require modernc.org/sqlite v1.40.1
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require (
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github.com/dustin/go-humanize v1.0.1 // indirect
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github.com/google/uuid v1.6.0 // indirect
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github.com/mattn/go-isatty v0.0.20 // indirect
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github.com/ncruces/go-strftime v0.1.9 // indirect
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github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
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golang.org/x/exp v0.0.0-20250620022241-b7579e27df2b // indirect
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golang.org/x/sys v0.36.0 // indirect
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modernc.org/libc v1.66.10 // indirect
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modernc.org/mathutil v1.7.1 // indirect
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modernc.org/memory v1.11.0 // indirect
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)
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51
go.sum
51
go.sum
@ -1,2 +1,49 @@
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gocv.io/x/gocv v0.42.0 h1:AAsrFJH2aIsQHukkCovWqj0MCGZleQpVyf5gNVRXjQI=
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gocv.io/x/gocv v0.42.0/go.mod h1:zYdWMj29WAEznM3Y8NsU3A0TRq/wR/cy75jeUypThqU=
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github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
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github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
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github.com/google/pprof v0.0.0-20250317173921-a4b03ec1a45e h1:ijClszYn+mADRFY17kjQEVQ1XRhq2/JR1M3sGqeJoxs=
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github.com/google/pprof v0.0.0-20250317173921-a4b03ec1a45e/go.mod h1:boTsfXsheKC2y+lKOCMpSfarhxDeIzfZG1jqGcPl3cA=
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github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
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github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
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github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
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github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
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github.com/ncruces/go-strftime v0.1.9 h1:bY0MQC28UADQmHmaF5dgpLmImcShSi2kHU9XLdhx/f4=
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github.com/ncruces/go-strftime v0.1.9/go.mod h1:Fwc5htZGVVkseilnfgOVb9mKy6w1naJmn9CehxcKcls=
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github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
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github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
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golang.org/x/exp v0.0.0-20250620022241-b7579e27df2b h1:M2rDM6z3Fhozi9O7NWsxAkg/yqS/lQJ6PmkyIV3YP+o=
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golang.org/x/exp v0.0.0-20250620022241-b7579e27df2b/go.mod h1:3//PLf8L/X+8b4vuAfHzxeRUl04Adcb341+IGKfnqS8=
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golang.org/x/mod v0.27.0 h1:kb+q2PyFnEADO2IEF935ehFUXlWiNjJWtRNgBLSfbxQ=
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golang.org/x/mod v0.27.0/go.mod h1:rWI627Fq0DEoudcK+MBkNkCe0EetEaDSwJJkCcjpazc=
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golang.org/x/sync v0.16.0 h1:ycBJEhp9p4vXvUZNszeOq0kGTPghopOL8q0fq3vstxw=
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golang.org/x/sync v0.16.0/go.mod h1:1dzgHSNfp02xaA81J2MS99Qcpr2w7fw1gpm99rleRqA=
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golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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golang.org/x/sys v0.36.0 h1:KVRy2GtZBrk1cBYA7MKu5bEZFxQk4NIDV6RLVcC8o0k=
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golang.org/x/sys v0.36.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
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golang.org/x/tools v0.36.0 h1:kWS0uv/zsvHEle1LbV5LE8QujrxB3wfQyxHfhOk0Qkg=
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golang.org/x/tools v0.36.0/go.mod h1:WBDiHKJK8YgLHlcQPYQzNCkUxUypCaa5ZegCVutKm+s=
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modernc.org/cc/v4 v4.26.5 h1:xM3bX7Mve6G8K8b+T11ReenJOT+BmVqQj0FY5T4+5Y4=
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modernc.org/cc/v4 v4.26.5/go.mod h1:uVtb5OGqUKpoLWhqwNQo/8LwvoiEBLvZXIQ/SmO6mL0=
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modernc.org/ccgo/v4 v4.28.1 h1:wPKYn5EC/mYTqBO373jKjvX2n+3+aK7+sICCv4Fjy1A=
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modernc.org/ccgo/v4 v4.28.1/go.mod h1:uD+4RnfrVgE6ec9NGguUNdhqzNIeeomeXf6CL0GTE5Q=
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modernc.org/fileutil v1.3.40 h1:ZGMswMNc9JOCrcrakF1HrvmergNLAmxOPjizirpfqBA=
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modernc.org/fileutil v1.3.40/go.mod h1:HxmghZSZVAz/LXcMNwZPA/DRrQZEVP9VX0V4LQGQFOc=
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modernc.org/gc/v2 v2.6.5 h1:nyqdV8q46KvTpZlsw66kWqwXRHdjIlJOhG6kxiV/9xI=
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modernc.org/gc/v2 v2.6.5/go.mod h1:YgIahr1ypgfe7chRuJi2gD7DBQiKSLMPgBQe9oIiito=
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modernc.org/goabi0 v0.2.0 h1:HvEowk7LxcPd0eq6mVOAEMai46V+i7Jrj13t4AzuNks=
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modernc.org/goabi0 v0.2.0/go.mod h1:CEFRnnJhKvWT1c1JTI3Avm+tgOWbkOu5oPA8eH8LnMI=
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modernc.org/libc v1.66.10 h1:yZkb3YeLx4oynyR+iUsXsybsX4Ubx7MQlSYEw4yj59A=
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modernc.org/libc v1.66.10/go.mod h1:8vGSEwvoUoltr4dlywvHqjtAqHBaw0j1jI7iFBTAr2I=
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modernc.org/mathutil v1.7.1 h1:GCZVGXdaN8gTqB1Mf/usp1Y/hSqgI2vAGGP4jZMCxOU=
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modernc.org/mathutil v1.7.1/go.mod h1:4p5IwJITfppl0G4sUEDtCr4DthTaT47/N3aT6MhfgJg=
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modernc.org/memory v1.11.0 h1:o4QC8aMQzmcwCK3t3Ux/ZHmwFPzE6hf2Y5LbkRs+hbI=
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modernc.org/memory v1.11.0/go.mod h1:/JP4VbVC+K5sU2wZi9bHoq2MAkCnrt2r98UGeSK7Mjw=
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modernc.org/opt v0.1.4 h1:2kNGMRiUjrp4LcaPuLY2PzUfqM/w9N23quVwhKt5Qm8=
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modernc.org/opt v0.1.4/go.mod h1:03fq9lsNfvkYSfxrfUhZCWPk1lm4cq4N+Bh//bEtgns=
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modernc.org/sortutil v1.2.1 h1:+xyoGf15mM3NMlPDnFqrteY07klSFxLElE2PVuWIJ7w=
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modernc.org/sortutil v1.2.1/go.mod h1:7ZI3a3REbai7gzCLcotuw9AC4VZVpYMjDzETGsSMqJE=
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modernc.org/sqlite v1.40.1 h1:VfuXcxcUWWKRBuP8+BR9L7VnmusMgBNNnBYGEe9w/iY=
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modernc.org/sqlite v1.40.1/go.mod h1:9fjQZ0mB1LLP0GYrp39oOJXx/I2sxEnZtzCmEQIKvGE=
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modernc.org/strutil v1.2.1 h1:UneZBkQA+DX2Rp35KcM69cSsNES9ly8mQWD71HKlOA0=
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modernc.org/strutil v1.2.1/go.mod h1:EHkiggD70koQxjVdSBM3JKM7k6L0FbGE5eymy9i3B9A=
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modernc.org/token v1.1.0 h1:Xl7Ap9dKaEs5kLoOQeQmPWevfnk/DM5qcLcYlA8ys6Y=
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modernc.org/token v1.1.0/go.mod h1:UGzOrNV1mAFSEB63lOFHIpNRUVMvYTc6yu1SMY/XTDM=
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201
main.go
201
main.go
@ -3,79 +3,152 @@ package main
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import (
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"bufio"
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"bytes"
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"database/sql"
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"fmt"
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"image"
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"image/jpeg"
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"log"
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_ "modernc.org/sqlite"
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"net/http"
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"os"
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"strconv"
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"strings"
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"time"
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)
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const (
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streamURL = "http://furnace.service:8082/stream"
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func getEnv(key, fallback string) string {
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if val, ok := os.LookupEnv(key); ok {
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return val
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}
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return fallback
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}
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// 🔧 TUNE THESE ONCE
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roiX = 1050
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roiY = 760
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roiW = 60
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roiH = 10
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func getEnvInt(key string, fallback int) int {
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if val, ok := os.LookupEnv(key); ok {
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if i, err := strconv.Atoi(val); err == nil {
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return i
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}
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}
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return fallback
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}
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// Thresholds
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minAvgRed = 90 // below this → light OFF
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checkInterval = 2 * time.Second
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)
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func getEnvDuration(key string, fallback time.Duration) time.Duration {
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if val, ok := os.LookupEnv(key); ok {
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if d, err := time.ParseDuration(val); err == nil {
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return d
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}
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}
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return fallback
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}
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type Light struct {
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Name string
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X, Y, W, H int
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Priority string // high, default, low, urgent
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}
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var lights = map[string]Light{
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"furnace_power": {"Furnace Power", 1135, 785, 15, 5, "urgent"},
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"living_room_stat": {"Living Room Thermostat", 885, 230, 10, 5, "default"},
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"living_room_heat": {"Living Room Heating", 1395, 224, 10, 5, "default"},
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"dining_room_stat": {"Dining Room Thermostat", 885, 263, 10, 10, "default"},
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"dining_room_heat": {"Dining Room Heating", 1395, 267, 10, 5, "default"},
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"hot_water_stat": {"Hot Water Thermostat", 880, 440, 10, 5, "default"},
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"hot_water_heat": {"Hot Water Heating", 1405, 445, 10, 5, "default"},
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"first_bed_stat": {"First Bedroom Thermostat", 880, 480, 10, 5, "default"},
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"first_bed_heat": {"First Bedroom Heating", 1407, 480, 10, 5, "default"},
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"master_bed_stat": {"Master Bedroom Thermostat", 880, 520, 10, 5, "default"},
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"master_bed_heat": {"Master Bedroom Heating", 1418, 540, 10, 5, "default"},
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"basement_stat": {"Basement Thermostat", 875, 560, 10, 5, "default"},
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"basement_heat": {"Basement Heating", 1410, 560, 10, 5, "default"},
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"second_bed_stat": {"Second Bedroom Thermostat", 880, 600, 10, 5, "default"},
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"second_bed_heat": {"Second Bedroom Heating", 1412, 600, 10, 5, "default"},
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"inducer": {"Inducer", 1415, 645, 10, 5, "default"},
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"burner": {"Burner", 1420, 690, 10, 5, "default"},
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"circulator": {"Circulator", 1422, 734, 10, 5, "default"},
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}
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func main() {
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fmt.Println("Starting furnace light monitor")
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fmt.Println("Starting multi-light monitor")
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var prevState bool // false = Off, true = On
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dbPath := getEnv("LIGHT_DB_PATH", "/var/furnacecheck/lightlog.db")
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webcamURL := getEnv("WEBCAM_URL", "http://furnace.service:8082/stream")
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minBrightness := getEnvInt("MIN_BRIGHTNESS", 150)
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checkInterval := getEnvDuration("CHECK_INTERVAL", 2*time.Second)
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fmt.Println("Using DB:", dbPath)
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fmt.Println("Using webcam:", webcamURL)
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fmt.Println("Min Brightness:", minBrightness)
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fmt.Println("Check Interval:", checkInterval)
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db, err := sql.Open("sqlite", dbPath)
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if err != nil {
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log.Fatal(err)
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}
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defer db.Close()
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_, err = db.Exec(`CREATE TABLE IF NOT EXISTS light_checks (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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name TEXT,
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state TEXT,
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timestamp DATETIME
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)`)
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if err != nil {
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log.Fatal(err)
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}
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prevStates := make(map[string]bool)
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for {
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on, err := checkOnce()
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img, err := grabFrame(webcamURL)
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if err != nil {
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log.Println("Error:", err)
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log.Println("Error grabbing frame:", err)
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time.Sleep(time.Second)
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continue
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}
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// Check for state change
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if on != prevState {
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if on {
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fmt.Println("RED LIGHT: ON")
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} else {
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fmt.Println("RED LIGHT: OFF")
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for key, light := range lights {
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on := isLightOn(img, light, minBrightness)
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// Only act if state changed
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if on != prevStates[key] {
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stateStr := onOff(on)
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// Log to SQLite
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_, err := db.Exec(`INSERT INTO light_checks(name, state, timestamp) VALUES(?, ?, ?)`,
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key, stateStr, time.Now().UTC())
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if err != nil {
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log.Println("Failed to insert into DB:", err)
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}
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// Notify
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fmt.Printf("%s: %s\n", light.Name, stateStr)
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sendNtfyNotification(light, on)
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// Update previous state
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prevStates[key] = on
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}
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// Send notification
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sendNtfyNotification(on)
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prevState = on
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}
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|
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time.Sleep(checkInterval)
|
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}
|
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}
|
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|
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func checkOnce() (bool, error) {
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resp, err := http.Get(streamURL)
|
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func grabFrame(url string) (image.Image, error) {
|
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resp, err := http.Get(url)
|
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if err != nil {
|
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return false, err
|
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return nil, err
|
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}
|
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defer resp.Body.Close()
|
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|
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reader := bufio.NewReader(resp.Body)
|
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|
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for {
|
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frame, err := readJPEGFrame(reader)
|
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if err != nil {
|
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return false, err
|
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}
|
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|
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img, err := jpeg.Decode(bytes.NewReader(frame))
|
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return isRedLightOn(img), nil
|
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frame, err := readJPEGFrame(reader)
|
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if err != nil {
|
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return nil, err
|
||||
}
|
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|
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return jpeg.Decode(bytes.NewReader(frame))
|
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}
|
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|
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func readJPEGFrame(r *bufio.Reader) ([]byte, error) {
|
||||
@ -108,38 +181,31 @@ func readJPEGFrame(r *bufio.Reader) ([]byte, error) {
|
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}
|
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buf.WriteByte(b)
|
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|
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if buf.Len() > 2 {
|
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data := buf.Bytes()
|
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if data[len(data)-2] == 0xFF && data[len(data)-1] == 0xD9 {
|
||||
return buf.Bytes(), nil
|
||||
}
|
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data := buf.Bytes()
|
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if len(data) > 2 && data[len(data)-2] == 0xFF && data[len(data)-1] == 0xD9 {
|
||||
return buf.Bytes(), nil
|
||||
}
|
||||
}
|
||||
}
|
||||
|
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func isRedLightOn(img image.Image) bool {
|
||||
func isLightOn(img image.Image, light Light, minBrightness int) bool {
|
||||
bounds := img.Bounds()
|
||||
|
||||
x0 := clamp(roiX, bounds.Min.X, bounds.Max.X)
|
||||
y0 := clamp(roiY, bounds.Min.Y, bounds.Max.Y)
|
||||
x1 := clamp(roiX+roiW, bounds.Min.X, bounds.Max.X)
|
||||
y1 := clamp(roiY+roiH, bounds.Min.Y, bounds.Max.Y)
|
||||
x0 := clamp(light.X, bounds.Min.X, bounds.Max.X)
|
||||
y0 := clamp(light.Y, bounds.Min.Y, bounds.Max.Y)
|
||||
x1 := clamp(light.X+light.W, bounds.Min.X, bounds.Max.X)
|
||||
y1 := clamp(light.Y+light.H, bounds.Min.Y, bounds.Max.Y)
|
||||
|
||||
var redSum int
|
||||
var lumSum float64
|
||||
var count int
|
||||
|
||||
for y := y0; y < y1; y++ {
|
||||
for x := x0; x < x1; x++ {
|
||||
r, g, b, _ := img.At(x, y).RGBA()
|
||||
red := int(r >> 8)
|
||||
green := int(g >> 8)
|
||||
blue := int(b >> 8)
|
||||
|
||||
// ensure it's "red", not white glare
|
||||
if red > 100 && red > green+30 && red > blue+30 {
|
||||
redSum += red
|
||||
count++
|
||||
}
|
||||
r8, g8, b8 := int(r>>8), int(g>>8), int(b>>8)
|
||||
lum := 0.299*float64(r8) + 0.587*float64(g8) + 0.114*float64(b8)
|
||||
lumSum += lum
|
||||
count++
|
||||
}
|
||||
}
|
||||
|
||||
@ -147,8 +213,8 @@ func isRedLightOn(img image.Image) bool {
|
||||
return false
|
||||
}
|
||||
|
||||
avgRed := redSum / count
|
||||
return avgRed > minAvgRed
|
||||
avgLum := lumSum / float64(count)
|
||||
return avgLum > float64(minBrightness)
|
||||
}
|
||||
|
||||
func clamp(v, min, max int) int {
|
||||
@ -161,21 +227,24 @@ func clamp(v, min, max int) int {
|
||||
return v
|
||||
}
|
||||
|
||||
func sendNtfyNotification(on bool) {
|
||||
state := "OFF"
|
||||
func onOff(on bool) string {
|
||||
if on {
|
||||
state = "ON"
|
||||
return "ON"
|
||||
}
|
||||
return "OFF"
|
||||
}
|
||||
|
||||
func sendNtfyNotification(light Light, on bool) {
|
||||
state := onOff(on)
|
||||
url := "https://ntfy.unbl.ink/furnace"
|
||||
body := bytes.NewBufferString(state)
|
||||
body := bytes.NewBufferString(fmt.Sprintf("%s: %s", light.Name, state))
|
||||
req, err := http.NewRequest("POST", url, body)
|
||||
if err != nil {
|
||||
log.Println("Failed to create request:", err)
|
||||
return
|
||||
}
|
||||
req.Header.Set("Title", "Furnace Power")
|
||||
req.Header.Set("Priority", "high")
|
||||
req.Header.Set("Title", "Light State Change")
|
||||
req.Header.Set("Priority", light.Priority)
|
||||
|
||||
client := &http.Client{Timeout: 5 * time.Second}
|
||||
resp, err := client.Do(req)
|
||||
|
||||
Reference in New Issue
Block a user